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Baby sleep basics: Birth to 3 months. Typical sleep patterns for newborns. Newborns sleep a lot â typically up to 16 to 17 hours a day. But most babies don't stay asleep for more than two to four hours at a time, day or night, during the first few weeks of life. The result? Lots of sleep for your baby and a very irregular â and tiring â schedule for you.
While there may be babies who start skipping that two a.m. feeding by the third month, most three-month-olds still need a feeding (or two) during the night, especially if they're nursing. By four months, you can expect your baby to sleep seven or even eight hours at a stretch. Thatâs because most four-month-old babies have reached that magic weight of 11 pounds, which means, metabolically speaking, they don't really need a nighttime feeding (though they may well demand one!).