How many milliliters of milk does a 7-day-old child take at a time?

How many milliliters of formula for a 7-day-old baby to eat with the baby’s own situation and its mother’s breast milk situation and other factors, need to be specifically analyzed, such as full-term healthy baby formula milk feeding, each breastfeeding 50 ~ 80ml or so, breastfeeding, on-demand feeding is most appropriate.
Generally for the 7-day-old baby throughput recommended breastfeeding, on-demand feeding is most appropriate, the amount of feeding to the baby after breastfeeding can sleep quietly for about 2 ~ 2.5 hours appropriate, and no obvious vomiting and other symptoms of gastrointestinal intolerance. For formula-fed babies, it is generally recommended to feed about 50~80ml per day, every 2.5~3 hours.
For preterm babies or babies with medical conditions (e.g. necrotizing small bowel colitis in newborns), a physician’s assessment is needed to determine whether a dietary ban or a small amount of feeding is appropriate.
It is recommended to consult a specialist for guidance on feeding according to the baby’s condition.