Mommies, hello ?? who's on IV, can you tell me if the baby is having a…

Mommies, hello ?? who's on IV, can you tell me if the baby is having a meltdown while feeding from a bottle, almost every feeding is a whole quest, crying and screaming. He eats half of it at best, and sometimes around every 3-4 feedings he eats all of it, or even asks for supplements. What should I do already don't know ? talked with the pediatrician, she says "well, strange, the formula is good", but that doesn't mean it suits him... And I'm afraid to jump on the formula, I'm afraid to harm him. In general, it's complicated, very complicated.. And another thing.. Two weeks ago we were 49