When Do Babies Start Sleeping Longer?

Understanding Newborn Sleep Patterns

Parents of newborns often find themselves adjusting to their baby’s sleep patterns, which may include very short periods of sleep interrupted by needs for feeding and changing. Generally, babies start sleeping longer stretches between 2 to 4 months of age. Every child is unique, and the time it takes for longer sleep stretches can vary, but most infants will begin consolidating sleep at night and require fewer feedings as they grow.

Newborns and Sleep

During the first few weeks, babies typically sleep in short bursts for a total of 16 to 17 hours over a 24-hour period. These sleep segments might only last one to two hours at a time. This is because newborns have tiny stomachs and need to wake frequently to eat.

Progressing Through the First Year

By the time a baby reaches about 3 months of age, you may notice a pattern of longer nighttime sleep unfolding, often a stretch of 4 to 6 hours. This period is a developmental milestone known as “sleeping through the night.” Over time, many babies extend these initial long sleep periods and by 6 months, many can sleep for 9 to 12 hours at a stretch.

Factors Influencing a Baby’s Sleep Duration

Several factors can influence when a baby starts sleeping for longer periods, including maturity, weight, feeding methods, and sleep environment.

Developing Circadian Rhythms

Babies need time to develop their circadian rhythms, which are internal processes governing the sleep-wake cycle that are influenced by external cues such as light and darkness. Helping your baby establish a healthy sleep-wake cycle can encourage longer periods of sleep.

Weight and Feeding

Babies often begin to sleep for longer stretches once they’ve doubled their birth weight or weigh around 12 to 13 pounds. Additionally, whether a baby is breastfed or formula-fed can make a difference; formula is digested more slowly, potentially allowing formula-fed babies to sleep for longer stretches earlier.

Creating a Conducive Sleep Environment

A baby’s sleep environment should be quiet, dark, and cool with minimal disruptions. Setting a consistent bedtime routine can also signal to your baby that it is time to wind down for the night.

Establishing Good Sleep Habits and Routines

Parents can play a pivotal role in helping their babies learn to sleep longer by practicing good sleep hygiene and setting routines.

Setting a Consistent Bedtime Routine

Establishing a calming pre-sleep ritual can make it easier for your baby to settle down. This can include a bath, a book, or some quiet songs. Consistent routines before bed can help cue your baby that it’s time to sleep for a longer period.

Understanding Sleep Cues

Recognizing your baby’s signs of sleepiness, such as rubbing their eyes or being fussy, and putting them to bed promptly can prevent over-tiredness, which often makes it more difficult for babies to fall and stay asleep.

Feeding Right Before Bed

A full stomach can help your baby sleep longer stretches. Consider scheduling a feeding right before bedtime, which can encourage a longer initial sleep period.

Teaching Self-Soothing

When babies wake up during the night, they may not always need immediate attention. Sometimes, they can self-soothe back to sleep. Giving your baby a chance to settle on their own can reinforce longer sleep stretches.

Sleep Training Methods

If, after establishing routines and habits, your baby still struggles with longer periods of sleep, some parents may consider sleep training methods to encourage better sleep.

Graduated Extinction (The Ferber Method)

This method involves putting your baby to bed when they are drowsy but awake and using progressively longer time intervals before offering comfort when they cry during the night.

No-Tears Methods

These strategies focus on gradually phasing out sleep associations without letting the baby cry it out. It can include tactics like slowly removing yourself from the baby’s room over time.

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The Chair Method

In this method, a parent sits in a chair next to the baby’s crib while the baby falls asleep, moving the chair further away each night until they’re out of the room.

Understanding Sleep Regressions and Disturbances

Even after your baby starts sleeping longer stretches, there will be times when their sleep pattern might be interrupted due to growth spurts, milestones, illnesses, or teething.

Growth Spurts and Milestones

During growth spurts or when reaching developmental milestones like crawling or walking, babies might wake more often at night. This is temporary and usually resolves on its own.

Illness and Teething

A sick baby or teething pain can cause sleep disruptions, resulting in more frequent wakings and the need for comfort.

Managing Sleep Disturbances

Maintaining the sleep routine as much as possible during these times can help your baby settle back into longer sleep periods. Adjustments might be necessary, such as offering extra comfort or pain relief for teething.

When to Seek Professional Advice

Concerns about a baby’s sleep patterns are common, but sometimes they may indicate a need for professional advice.

Signs to Pay Attention To

If your baby is not sleeping for longer periods or seems excessively sleepy or irritable during the day, it might be best to consult a healthcare provider. A professional can assess your baby’s overall health and sleep habits, ensuring there are no underlying issues.

Support for Sleep Concerns

A pediatrician can offer guidance tailored to your baby’s needs and suggest potential changes to their routines or sleep environment that might encourage longer sleep durations.

Finishing Thoughts

By approximately 2 to 4 months, many babies will naturally start to sleep for longer periods, and a variety of factors including the development of circadian rhythms, feeding, and sleep environment can impact when this milestone is reached. Parents can facilitate the process by establishing consistent bedtimes, learning to read their baby’s sleep cues, and considering sleep training methods if necessary. Keep in mind that every baby is different, and sleep regressions are common in the first year. If in doubt, consulting a healthcare professional can offer peace of mind and additional strategies for encouraging healthy sleep patterns. Remember, while navigating these early months can be challenging, with time and patience, your baby, and you, will enjoy longer and more restful nights.


  • Ollie Lane

    My name is Ollie Lane, the zestful spirit and sleep enthusiast editor at GoodSleepHub. Blending my expertise in Sleep Technology with a dash of whimsy, I'm all about transforming your nights from blah to ta-da! I believe great sleep is a blend of science, art, and a bit of fairy dust. When I'm not knee-deep in the latest sleep gadgetry or jotting down notes for my next blog post, you can find me strumming on my ukulele or chasing after my mischievous beagle, Benny. My approach to sleep is like my music: playful, innovative, and always in tune with your needs.

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