
It is common for newborns to poop frequently at night, as they eat and sleep around the clock. However, by the time a baby is between six and eight weeks old, they typically start pooping less at night as they spend more time awake during the day, eating more during the day and less at night. By four months old, most babies stop pooping at night, although this can vary, and some babies may continue to poop in their sleep due to various factors such as growth spurts, changes in diet, or sleep training. While there is limited information specifically about three-year-olds, toddlers may occasionally go a few days without pooping, and their stooling patterns can vary. By the toddler stage, children typically have more control over their bowel movements, and they may occasionally withhold poop as a form of defiance or to delay bedtime.
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What You'll Learn
- Babies often poop in their sleep during growth spurts
- Introducing solids or new foods can increase pooping at bedtime
- Sleep training can cause babies to poop more frequently overnight
- Toddlers may wait to poop as an act of defiance or to delay bedtime
- A consistent schedule can help your baby poop more during the day

Babies often poop in their sleep during growth spurts
Babies have different bowel habits at different ages. Newborns, for instance, will poop, eat and sleep around the clock. They will also poop right after a feed, as they eat a lot at night.
By the time they are between 6 and 8 weeks old, babies start to get their days and nights figured out and will sleep longer at night, usually in the first stretch after bedtime. This means less eating and, consequently, less pooping at night.
Babies typically stop pooping their diaper at night by the time they are 4 months old. However, this is not always the case, as some babies continue to poop during sleep when they are on a consistent nap schedule. This can be because they have recently started solids, or because they are going through a growth spurt.
Growth spurts can cause babies to eat more, which means more poopy diapers. They may also poop more frequently when they are sprouting. During growth spurts, babies may also sleep more than usual, taking longer naps or sleeping more at night.
Babies go through many periods of intense growth or growth spurts, and they sleep more during these periods. Researchers have found that after increased hours of sleep and increased caloric intake, infants experienced measurable growth. This was sometimes in as little as two days.
Growth spurts can also cause babies to be fussier and more unsettled, which can disrupt nap times and nighttime sleep. They may also be more restless and clingy than usual, wanting to be held all the time and crying when put down.
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Introducing solids or new foods can increase pooping at bedtime
It's common for newborns to poop frequently at night, often right after a feeding. This is because they eat a lot at night. However, by the time they are around six to eight weeks old, they start to sleep longer at night—usually four to six hours after bedtime—and eat less frequently, so they tend to have more bowel movements during the day. By four months, most babies no longer poop at night, but it can still happen, especially if they've recently started solids.
Between 12 and 18 months, toddlers are beginning to gain control of their bowels. However, they may also start to assert their independence and seek more personal power. They might use poop as a way to boycott sleep time, especially if they're seeking attention. If you suspect this might be the case, it's important to set healthy sleep habits and not give in to attention-seeking behaviour.
If your toddler is pooping at night, it's important to change their diaper as soon as you discover it and consider using diaper cream to protect their skin. Try to minimise parental stimulation during diaper changes in the early morning hours to make it easier for your toddler to resettle.
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Sleep training can cause babies to poop more frequently overnight
It is common for newborns to poop frequently at night as they eat a lot around the clock. However, by 4 months, most babies stop pooping at night. As they get older, their feeding and pooping habits shift to the daytime.
If your baby is pooping during sleep, you can help prevent diaper rash by choosing a soft and absorbent diaper, ensuring it is not too tight, and applying a thick layer of barrier cream before sleep. For older babies, consider using a more absorbent diaper designed for longer stretches of sleep.
To reduce the frequency of pooping during sleep, you can adjust your baby's diet and routine. Offer fruits and high-fiber foods earlier in the day, and skip fruit at dinner, opting for binding foods like meat, cheese, rice, and toast instead. Keeping a food log can help you understand how your baby's diet affects their bowel movements.
Additionally, providing independent playtime in the evening can give your child alone time to poop, reducing the likelihood of them waiting until bedtime. Establishing healthy sleep habits and consistent schedules during the day can also encourage your baby to poop more during awake times.
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Toddlers may wait to poop as an act of defiance or to delay bedtime
It is normal for newborns to poop frequently at night, as they eat and sleep around the clock. However, by the time a baby is between 6 and 8 weeks old, they start spending more time awake during the day and typically start pooping less at night. By 4 months old, most babies are no longer pooping their diaper at night.
As toddlers begin to assert their independence, they may wait to poop as an act of defiance or to delay bedtime. This is common between the ages of 12 and 18 months, when toddlers are beginning to gain control of their bowels. They may also withhold their bowel movements to seek attention. This is typically just a phase and will pass as they get used to their newfound independence.
If your toddler is holding their poop until bedtime, it may be best to not give in to attention-seeking behavior. Your toddler will likely stop once they realize it is not getting the desired result. You can also try to break any feed-sleep associations by ensuring that feeding is not the last step before bedtime. For example, you could read books after feeding so that your toddler has some independent playtime before bed.
It is important to note that pooping at night may also be caused by other factors such as growth spurts, sleep training, or introducing new foods too quickly. Keeping a food log can help you identify any potential triggers. Additionally, a consistent daytime schedule can help your toddler develop a more consistent bowel routine, reducing the likelihood of nighttime pooping.
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A consistent schedule can help your baby poop more during the day
It is normal for newborns to poop frequently at night, as they eat and sleep around the clock. However, as they grow older, their sleeping and feeding patterns change, and they start to develop bladder and bowel control. By the time a baby is between six and eight weeks old, they typically start to poop less at night and more during the day. This is because they are spending more time awake and eating during the day.
A consistent daytime schedule can help your baby develop a routine, eating more during the day and less at night. This can help to regulate their bowel movements and reduce the likelihood of night-time pooping.
Additionally, once your baby is weaned off night feeds, you will likely notice a reduction in night-time pooping. Introducing solids or new foods can also impact bowel habits and increase pooping at bedtime or early morning. It is important to introduce new foods gradually to avoid disrupting your baby's digestive system.
If your baby is going through a growth spurt, they may poop more frequently as they are eating more. Similarly, if they are learning a new skill or undergoing sleep training, their bowel habits may be affected. Maintaining a consistent schedule can help your baby's body adjust to these changes and promote more daytime pooping.
Finally, it is important to note that toddlers may occasionally go a few days without pooping. However, if they experience sudden changes in their bowel habits, such as decreased frequency or hard, pebbly stools, it is important to consult a pediatrician.
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Frequently asked questions
It is uncommon for a three-year-old to poop in their sleep, as by 12-18 months, toddlers can usually control their bowels. However, it is not unheard of for toddlers to occasionally go a few days without pooping, so it may not be a cause for concern.
Toddlers may wait to poop until nighttime as an act of defiance or to delay bedtime. They may also be going through a growth spurt, or it could be a result of their diet or sleep training.
You can try to establish a consistent daytime schedule to encourage more daytime eating and pooping. You should also ensure your toddler is getting enough fibre and fluids to keep their poop soft.
You should change them as soon as possible and look into creating healthy sleep habits. Do not give in to any attention-seeking behaviour, as this may encourage them to continue pooping in their sleep.











































