Infants generally refer to children up to 1 year of age, and in general, infants sleep for about 11-18 hours per day. At different months of age, sleep time decreases as the months grow older, and at the same months of age, sleep time varies and varies from person to person, but fluctuates within a fixed range. infants within 2 months of age sleep about 16-18 hours per day, 2-4 hours at a time. When babies are 2-4 months old, they sleep an average of 15-16 hours a day, and sleep longer at night than during the day. between 4 months and 1 year old, babies sleep about 11-12 hours a day, and gradually develop a 24-hour day and night routine, and can sleep until dawn, and develop the habit of having a nap in the morning and afternoon. In principle, as long as your baby is in good spirits, has a normal appetite, and is developing well in terms of length and weight, you can basically rest assured. However, if your baby’s daily sleep time deviates from the normal range by more than 2 hours, you may need to consult a pediatric developmental clinic to monitor your baby’s growth and development.