Girls, tell me you gave birth to 7 babies, on the first day, colostrum…

Girls, tell me you gave birth to 7 babies, on the first day, colostrum was secreted but the nipples weren't ready, and the baby was tired and slept. On the second day, I fed her during the day, then she fell asleep, the colostrum disappeared. The medical staff wants to give her formula mixed in. Can you tell me what it depends on and what to do?