POOJA KOTHARIMom of a 8 yr 5 m old boy1 Year agoA. The average weight of a 3-month-old baby is 12.9 pounds for girls and 14.1 pounds for boys; average length is 23.5 inches for girls and 24.2 inches for boys.
Whether baby’s close to the average or not, the important thing is that they’re growing at a healthy rate. They’ve likely gained another 1.5 to 2 pounds and grown 1 to 1.5 inches this month. The size of baby’s head may have gone up by a half inch too.
It’s common for a baby to experience a 3-month-old growth spurt. Signs of a growth spurt are having an especially hungry or cranky baby. Baby might wake more at night too. Don’t worry—growth spurts are temporary! Let baby eat, sleep or cuddle more if that’s what they seem to want, and try not to get too frustrated by the sudden change. It can be exhausting for you, but growth spurts usually only last one to three days at a time
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