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Baby Sleep Cycles and Patterns Explained

2 min readUpdated February 14, 2025
Mandy Treeby
Reviewed by
Chief Baby Sleep Consultant

Baby Sleep Cycles

Sleep is crucial for your baby’s growth and development. Understanding your baby’s sleep cycles can help you ensure they get the rest they need at each stage, from birth to toddlerhood. Good sleep for your baby also means better rest for you, making it easier to manage daily routines.

How Long Should Your Baby Sleep at Every Stage?

The amount of sleep your baby needs changes as they grow. Here’s a helpful baby sleep chart to give you an idea of what to expect:

 

 

AgeHours of Sleep in 24-Hour PeriodHours of Sleep per NightDaytime/Naptime Hours
Newborn16 to 20 hoursEqually divided day/nightSleep in 2- to 3-hour blocks (breastfed) or 3- to 4-hour blocks (bottle-fed)
Babies 3 to 6 Months Old14 hours8 to 9 hours with interruptions3 naps lasting about 2 hours each
Babies 6 to 12 Months Old14 hours8 to 9 hours without interruption2 or 3 naps lasting from 30 minutes to 2 hours each
Toddlers 12+ Months Old12 to 14 hours10 hours1 or 2 naps, totaling 2 to 3 hours

 

Remember, these are averages and each baby is unique. If you have concerns, consult your baby’s healthcare provider.

Key Takeaways for Better Baby Sleep

  • At what age do babies start sleeping better?: Around 2-3 months, babies develop more regular sleep patterns, leading to longer night sleep. By 3-4 months, they may start learning to self-soothe.

  • Sleep Assessment Tool: Our Sleep Coaching experts have created a free sleep assessment tool to help you understand your baby’s sleep patterns and create a personalized sleep program. The Smart Sleep Coach app uses psychology, support, and education to deliver sustainable sleep results for your baby and you.

What Is a Sleep Cycle for Babies?

A sleep cycle refers to the patterns of wakefulness and sleep within a 24-hour period. For babies, a sleep cycle includes two types of sleep: REM (Rapid Eye Movement) and non-REM sleep, also known as active and quiet sleep.

  • REM Sleep: In this active sleep phase, your baby may move around and make noises.

  • Non-REM Sleep: This quiet sleep phase is deeper, and your baby may be harder to wake.

There are typically five stages in a baby’s sleep cycle:

  1. Stage One: Drowsiness and drifting off to sleep.

  2. Stage Two: REM sleep or active sleep.

  3. Stage Three: Light sleep.

  4. Stages Four and Five: Deep non-REM sleep or quiet sleep.

Watch for signs your baby is ready for sleep, such as eye rubbing, yawning, or fussiness.

Newborn Sleep Cycle

Newborns sleep a lot but in short cycles, typically 40 minutes to 2 hours. This can make it seem like you’re constantly up with your baby. Establishing a routine can help ensure your baby gets enough sleep and make your life easier.

Key Takeaways for Better Baby Sleep

  • Changing Newborn Sleep Schedule: Newborns often sleep during the day and stay up at night. You can adjust their schedule by keeping the room bright during the day and dark at night.

  • Healthy Sleep Habits: Establishing healthy sleep habits from day one is crucial. The Smart Sleep Coach app features 1-click sleep tracking and a smart sleep schedule to work with your baby’s biological clock.

Setting Up a Newborn Sleep Schedule

Implementing a sleep schedule revolves around your baby’s circadian clock. Tracking sleep patterns can help you set a schedule and ensure your baby gets enough sleep.

What to Expect

  • First Few Weeks: Newborns sleep most of the time, with 1- to 2-hour wake periods.

  • 6-8 Weeks: Your baby starts to settle into a routine, showing signs of drowsiness.

  • 3-5 Months: The longest sleep period in the evening extends to about 3-5 hours.

Ensuring a comfortable and safe sleep environment is crucial. Check your baby’s diaper before bed and ensure the crib is bare and safe.

3- to 6-Month-Old Baby Sleep Patterns

As your baby grows, recognizing sleep cues becomes easier. Naps become less frequent, and nighttime sleep lengthens. Around 4 months, your baby may start to self-soothe. Gradually reduce nighttime attention to encourage self-soothing.

FAQS AT A GLANCE

Sleep routines may start to emerge around 3 to 4 months, with longer sleep periods and fewer daytime naps.

Conclusion

Understanding your baby’s sleep cycles and patterns can help you set a schedule that benefits both you and your baby. With the right expectations and tools, you can achieve better sleep for the entire family.

How We Wrote This Article The information in this article is based on expert advice from trusted sources like the American Academy of Pediatrics and the American College of Obstetricians and Gynecologists. Always consult medical professionals for diagnosis and treatment.

About Mandy Treeby

Mom of two, co-founder of the Smart Sleep Coach and a Pediatric Sleep Consultant. In working with parents & babies around the world she wants to make quality baby sleep coaching available to all.

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