8-day-old infants are usually fed on demand according to their gastrointestinal condition, with 7-8 times of breastfeeding per day, each time around 50-100ml, but there are individual differences. 8-day-old infants, belonging to the newborn, are recommended to be fed on demand, but need to be adjusted as appropriate according to their digestive tract tolerance, and it is usually considered that they should be fed 7~8 times a day, with similar intervals between day and night, about once every 3 hours, and a little longer in the latter half of the night, and the amount of breastfeeding each time should be about 50~100 ml. The amount of milk consumed is generally considered to be appropriate if the baby sleeps enough, cries inconspicuously, has normal urine output, and has a tolerable digestive tract with no abnormal symptoms such as vomiting and bloating. It is recommended to consult a specialist if necessary to guide feeding according to the baby’s specific situation.