Baby Sleep Schedule by Age: Wake Windows Chart for Naps

Medically reviewed by Dr. Ahmad Raza, MD (Pediatrics) — ChildBloom Medical Review Panel. Last updated: August 4, 2026.

Editorial & affiliate disclosure: our guidance is written and reviewed by clinicians. ChildBloom may earn a commission from qualifying purchases made through links on this page, which never changes what our pediatric reviewers recommend.

Looking for clear answers about baby sleep schedule by age? This pediatrician-reviewed guide covers what matters, what to skip, the safety checks that count, and exactly when to involve your doctor — based on current AAP, CDC and CPSC guidance on baby sleep schedule by age.

Quick pediatrician summary: baby sleep schedule by age

Short answer: A pediatrician explains baby sleep schedule by age: safe-sleep rules, what genuinely helps tonight, product checks and when to get help.

Introduction

One of the most common questions new parents ask is: how much sleep does my baby actually need, and when should they nap? A reliable baby sleep schedule by age can answer both questions — and transform your household from exhaustion to predictability.

The National Sleep Foundation recommends that newborns sleep 14 to 17 hours per day, while infants aged 4 to 12 months need 12 to 16 hours. But total hours alone do not tell the full story. Wake windows — the amount of time your baby can comfortably stay awake between naps — are the key to building a schedule that actually works.

This guide provides a complete baby sleep schedule by age, including wake windows charts, nap times, bedtime routines, and tips for navigating common sleep disruptions. Every recommendation aligns with current AAP safe sleep guidelines and peer-reviewed research.

Table of Contents

1. What Is a Wake Window?
2. Baby Sleep Schedule by Age: The Complete Chart
3. Newborn Sleep (0–6 Weeks)
4. Infant Sleep: 6 Weeks to 3 Months
5. Infant Sleep: 3 to 6 Months
6. Infant Sleep: 6 to 9 Months
7. Infant Sleep: 9 to 12 Months
8. Toddler Transition: 12 to 18 Months
9. How to Build a Bedtime Routine That Works
10. Common Sleep Disruptions and How to Handle Them
11. Key Takeaways
12. Frequently Asked Questions
13. When to Call the Pediatrician
14. Bottom Line
15. References

What Is a Wake Window?

A wake window is the period of time your baby can comfortably stay awake between sleep periods. When you put your baby down within their wake window, they fall asleep faster and sleep longer. Miss the window, and your baby becomes overtired — making it harder to fall asleep and causing more night wakings.

Featured Snippet Answer: Wake windows are the optimal awake periods between naps for each age. Newborns tolerate 45 to 60 minutes. By 3 to 6 months, wake windows stretch to 1.5 to 2.5 hours. By 9 to 12 months, most babies handle 3 to 4 hours between naps.

Wake windows change as your baby grows. Tracking them helps you build a baby sleep schedule by age that matches your child’s biological needs — not guesswork.

Baby Sleep Schedule by Age: The Complete Chart

Here is a comprehensive overview of total sleep, wake windows, and naps at every stage:

Note: These ranges are guidelines. Every baby is different. Use this baby sleep schedule by age as a starting point, then adjust based on your baby’s cues.

Newborn Sleep (0–6 Weeks)

Newborns do not have a circadian rhythm. Their sleep-wake cycle is driven by hunger, not the clock. Expect:

• 4 to 6 sleep periods spread across 24 hours.
• No consistent day-night pattern until about 6 weeks.
• Wake windows of 45 to 60 minutes, including feeding time.
• Bedtime between 8:00 and 10:00 PM, though it may not feel like a real bedtime yet.

What you can do:

• Expose your baby to natural daylight during the day.
• Keep nighttime feeds dark and quiet.
• Start a simple 3-step bedtime cue (dim lights, Swaddle, white noise).
• Do not worry about a rigid schedule at this stage. Focus on safe sleep practices.

The AAP recommends placing newborns on their back, on a firm mattress, with no loose bedding, pillows, or bumpers.

Infant Sleep: 6 Weeks to 3 Months

Around 6 to 8 weeks, your baby’s circadian rhythm begins to develop. Melatonin production starts to follow a day-night pattern. You may notice:

• Longer nighttime stretches (3 to 5 hours between feeds).
• More predictable daytime sleepiness.
• Wake windows of 60 to 90 minutes.
• 4 to 5 naps per day, though they may be short (30 to 45 minutes).

Sample schedule:

Tip: At this age, the last wake window before bedtime is often the shortest. Watch for sleep cues — yawning, eye rubbing, fussiness — and start your bedtime routine early.

Infant Sleep: 3 to 6 Months

This is the age when a structured baby sleep schedule by age becomes more realistic. Your baby’s wake windows stretch, naps begin to consolidate, and nighttime sleep lengthens.

Key changes:

• Wake windows: 1.5 to 2.5 hours. The last wake window of the day is usually the shortest.
• 3 to 4 naps, gradually consolidating to 3.
• Nighttime sleep stretches of 5 to 8 hours (though night feeds are still normal).
• Bedtime between 7:00 and 8:30 PM.

Sample schedule (3-nap day):

Sleep regression note: The 4-month sleep regression is real. Your baby’s sleep architecture changes permanently around this age, moving from two sleep stages to four (more like adult sleep). Expect more night wakings for 2 to 6 weeks. This is normal and temporary.

Infant Sleep: 6 to 9 Months

By 6 months, most babies are ready for a 2-nap schedule. Wake windows continue to stretch, and nighttime sleep becomes more consolidated.

Key changes:

• Wake windows: 2 to 3 hours. The last window before bed is typically 2.5 to 3 hours.
• 2 naps per day, each lasting 1 to 2 hours.
• Nighttime sleep of 10 to 12 hours (with 0 to 2 night feeds).
• Bedtime between 7:00 and 8:00 PM.

Sample schedule (2-nap day):

Transition tip: If your baby resists the second nap or takes very short naps, they may be ready to drop to 2 naps. Alternatively, if they are fighting naps and seem overtired, they may need a third short catnap. Follow their cues.

Infant Sleep: 9 to 12 Months

At this stage, the baby sleep schedule by age becomes more predictable. Most babies take 2 solid naps and sleep through the night (or with only one feed).

Key changes:

• Wake windows: 3 to 4 hours. The last window before bed is the longest.
• 2 naps per day, each 1 to 2 hours.
• Nighttime sleep of 10 to 12 hours.
• Bedtime between 7:00 and 8:00 PM.

Sample schedule:

Note: The 8-to-10-month sleep regression can disrupt this schedule. Separation anxiety peaks during this period. Stay consistent with your routine, and the regression will pass.

Toddler Transition: 12 to 18 Months

Around 12 to 18 months, most toddlers transition from 2 naps to 1 nap. This shift can take weeks and often causes temporary sleep disruptions.

Key changes:

• Wake windows: 4 to 6 hours.
• 1 nap per day, lasting 1.5 to 3 hours.
• Nighttime sleep of 10 to 12 hours.
• Bedtime between 7:00 and 8:00 PM.

Signs your baby is ready for the 2-to-1 nap transition:

• Consistently fighting the morning nap.
• Taking 30+ minutes to fall asleep at naptime.
• The morning nap pushes the afternoon nap too late.
• Night wakings increase despite a consistent schedule.

Transition strategy: Gradually push the morning nap 15 minutes later every 2 to 3 days until it merges into a single midday nap around 12:00 to 12:30 PM. Move bedtime 15 to 30 minutes earlier during the transition to prevent overtiredness.

How to Build a Bedtime Routine That Works

A consistent bedtime routine is one of the strongest predictors of healthy infant sleep. Research published in the Journal of Clinical Sleep Medicine shows that babies with a predictable pre-sleep routine fall asleep faster and wake less at night.

Elements of an effective bedtime routine (20 to 30 minutes total):

1. Warm bath (5 minutes) — signals the body that the day is ending.
2. Gentle massage or lotion (5 minutes) — see our baby massage techniques guide for calming strokes.
3. Pajamas and sleep sack (3 minutes) — keep it simple and consistent.
4. Feed (5–10 minutes) — for younger babies; older babies can have a small snack.
5. Book or lullaby (5 minutes) — keep the lights dim and your voice soft.
6. Into the crib drowsy but awake — this is the single most important step.

Featured Snippet Answer: An effective baby bedtime routine includes a warm bath, gentle massage, pajamas, a feed, and a short book or lullaby — all completed in 20 to 30 minutes. Place your baby in the crib drowsy but awake to encourage independent sleep.

Consistency tips:

• Follow the same order every night.
• Keep the environment the same — same room, same lighting, same white noise.
• Start the routine at the same time each evening.
• Avoid screens for at least 60 minutes before bed.

Common Sleep Disruptions and How to Handle Them

Even the best baby sleep schedule by age can be disrupted. Here are the most common issues and how to handle them:

Sleep Regressions

Teething

Teething can cause 1 to 3 nights of disrupted sleep. Offer a cold teething toy before bed. If your pediatrician approves, a weight-appropriate dose of infant acetaminophen can help on the worst nights.

Illness

During illness, throw out the schedule. Feed, comfort, and soothe your baby as needed. Return to your normal routine once they recover.

Travel and Time Zone Changes

Travel disrupts sleep. To minimize the impact:

• Bring your white noise machine and sleep sack.
• Recreate the bedtime routine as closely as possible.
• Adjust to the new time zone gradually — shift naps and bedtime by 30 minutes per day.

Daylight Saving Time

Shift naps and bedtime by 15 minutes each day for 4 days before the clock change. This gradual approach reduces the shock to your baby’s internal clock.

Key Takeaways

• A baby sleep schedule by age is built on wake windows, not clock times.
• Newborns need 14 to 17 hours of sleep with 45 to 60 minute wake windows.
• By 6 months, most babies take 2 naps with 2 to 3 hour wake windows.
• By 12 months, wake windows stretch to 3 to 4 hours.
• A consistent bedtime routine is one of the strongest predictors of healthy sleep.
• Sleep regressions are normal and temporary. Stay consistent.
• Always follow AAP safe sleep guidelines: back to sleep, firm mattress, no loose bedding.

Frequently Asked Questions

1. What is the best baby sleep schedule by age?

The best schedule follows age-appropriate wake windows. Newborns need 45 to 60 minute wake windows. By 3 to 6 months, windows stretch to 1.5 to 2.5 hours. By 9 to 12 months, most babies handle 3 to 4 hours awake between naps.

2. When should I start a sleep schedule for my baby?

You can begin building simple routines at 6 to 8 weeks, when the circadian rhythm starts developing. A more structured baby sleep schedule by age becomes realistic around 3 to 4 months.

3. How do I know if my baby’s wake window is too long?

Signs of an overtired baby include: fussiness, arching the back, clenched fists, difficulty settling, short naps, and frequent night wakings. If you see these signs, try shortening the wake window by 15 minutes.

4. How many naps should a 6-month-old take?

Most 6-month-olds take 2 to 3 naps per day. By 6 to 9 months, the transition to 2 naps is typical. Each nap lasts 1 to 2 hours.

5. What time should bedtime be for a 4-month-old?

Bedtime for a 4-month-old should fall between 7:00 and 8:30 PM. The last wake window before bed is usually the shortest — around 1.5 to 2 hours.

6. When can I expect my baby to sleep through the night?

Many babies begin sleeping 6 to 8 hour stretches by 3 to 4 months. Full “sleeping through the night” (10 to 12 hours) typically happens between 6 and 9 months, though this varies widely.

7. Is it normal for my baby to wake at night?

Yes. Night wakings are developmentally normal through the first year and beyond. Hunger, growth spurts, teething, and sleep regressions all cause night wakings.

8. Should I wake my baby from a nap?

If a nap extends past 2 hours (for babies under 6 months) or 2.5 hours (for older babies), gently wake them. Long naps can push bedtime too late and disrupt nighttime sleep.

9. What is the 4-month sleep regression?

Around 4 months, your baby’s sleep architecture permanently changes from two stages to four — similar to adult sleep. This causes more frequent night wakings and shorter naps for 2 to 6 weeks. Stay consistent with your routine.

10. How do I transition from 3 naps to 2?

Gradually extend the morning and middle wake windows by 15 minutes every 2 to 3 days. Drop the third (late afternoon) nap first. Move bedtime 15 to 30 minutes earlier during the transition.

When to Call the Pediatrician

Contact your pediatrician if you notice any of the following:

• Your baby consistently sleeps far more or far less than the recommended range for their age.
• Your baby has difficulty breathing during sleep, snores loudly, or pauses in breathing.
• Your baby is not gaining weight and seems too sleepy to feed adequately.
• Your baby is older than 4 months and has not begun to develop any day-night sleep pattern.
• You suspect sleep apnea — characterized by loud snoring, mouth breathing, and restless sleep.
• Your baby shows extreme difficulty settling despite consistent routines and age-appropriate wake windows.

Emergency Note: If your baby stops breathing, turns blue, or is unresponsive, call emergency services immediately. Always follow AAP safe sleep guidelines to reduce the risk of SIDS.

Bottom Line

A baby sleep schedule by age gives you a roadmap — not a rigid rulebook. Wake windows change as your baby grows, and every child develops at their own pace. Use the charts in this guide as a starting point. Then observe your baby, adjust as needed, and trust the process.

Consistent routines, age-appropriate wake windows, and safe sleep practices form the foundation of healthy infant sleep. Most sleep challenges are temporary. With patience and consistency, both you and your baby will get the rest you need.

If concerns persist, talk to your pediatrician. They can rule out medical issues and help you fine-tune your approach.

References

1. American Academy of Pediatrics. “Safe Sleep Recommendations.” HealthyChildren.org. https://www.healthychildren.org
2. National Institutes of Health. “Infant sleep patterns and developmental outcomes.” Pediatrics, 145(3), 2020.
3. Centers for Disease Control and Prevention. “SIDS and Safe Sleep Environments.” https://www.cdc.gov
4. National Sleep Foundation. “How Much Sleep Do We Really Need?” https://www.sleepfoundation.org
5. World Health Organization. “Guidelines on Physical Activity, Sedentary Behaviour and Sleep for Children Under 5 Years of Age.” 2019. https://www.who.int
6. Mindell, J.A., et al. (2018). “Bedtime routines for young children: A dose-dependent association with sleep outcomes.” Journal of Clinical Sleep Medicine, 14(5).
7. National Health Service (UK). “Baby sleep guidance.” https://www.nhs.uk

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Medical Disclaimer

This article is for informational purposes only and does not constitute medical advice. Always consult your pediatrician before making changes to your baby’s sleep routine. The information provided here is based on current pediatric guidelines and peer-reviewed research, but individual circumstances may vary. If your baby shows signs of a sleep disorder, breathing difficulty, or developmental concern, seek professional medical care promptly. Always follow AAP safe sleep guidelines to reduce the risk of SIDS.

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Night wakings that start suddenly are often pain, not a schedule problem — check the diaper area first if your baby screams at changes: see our guide to a diaper rash that bleeds.

Common mistakes parents make with baby sleep schedule by age

• Assuming a higher price means a safer or better-performing option — certification and correct fit matter far more.
• Skipping the instruction manual, weight limits and product registration, which is how recall notices reach you.
• Changing several things at once, so you cannot tell what actually helped your baby.
• Relying on advice from social media instead of your pediatrician when something feels off.

Related pediatrician-reviewed reading

• Baby Sleep Schedule at 9 Months
• Baby Sleep Schedule at 6 Months
• How Many Naps by Age? Baby Sleep Chart
• Baby Sleep Sack TOG Guide
• baby sleep & nursery hub

References & further reading

• NICHD Safe to Sleep basics
• AAP 2022 safe sleep policy
• CPSC nursery recalls

Medical disclaimer: this article is for general education and does not replace individual medical advice. Always follow your own pediatrician’s guidance for your child.