Compared to the absolute fragmentary sleep in the first month of life, parents will find that a baby of more than one month gradually sleeps for a longer time in a single session. How long should a baby sleep in a day? After the first month, babies gradually start to sleep 1-2 hours in a single session during the day and 3-6 hours at night before feeding. Parents usually need to feed their babies 1-2 times during the night, usually between 10:00-1:00 p.m. and 3:00-5:00 a.m. Some babies can fall asleep naturally, while quite a few babies have a short period of fussiness before they fall asleep, usually lasting less than half an hour, and can be soothed to sleep by rocking them gently or humming softly. Compared to newborns, parents are slightly less stressed and can take advantage of their baby’s sleeping time to rest or do something for themselves. 3 months old babies are not recommended to sleep in a too soft bed, nor in a prone position, and if possible, should avoid sleeping with parents to avoid infant suffocation. The length and quality of sleep varies from baby to baby. The average daily sleep time for babies within 3 months of age is 12-14 hours, but some babies are as short as about 10 hours. As long as the baby wakes up naturally and is in good spirits after waking up, it means that the baby has slept enough, so parents should not simply compare the length of sleep with other babies.