The average normal sleep duration for a 7-month-old baby is 12 to 16 hours/day. The total sleep time of a 7-month-old baby is 12 to 16 hours per day, with an average of more than 6 hours of sleep at night and 6 hours of sleep during the day, usually once in the morning and once in the afternoon, with 3 to 4 hours of wakefulness in between. The sleep of babies of this age will gradually become regular, because after the baby adds complementary food, he can gradually prepare to quit night milk, and 7-month-old babies usually need night milk only once at night. If the baby goes to sleep after breastfeeding, it can be left to nature. If there is obvious sleep abnormality, you need to go to the hospital in time for consultation and treatment.