My baby is 2 month old. I am giving him formula milk as well as my pumped breast milk due to some medical reason as I am not well after my c-section delivery. He is only taking 30ml of formula, rarely 60 ml but everytime he is very fussy to take 60ml of milk. He takes a lot of time to drink milk also. He is gaining weight but I am not sure whether the weight gain is appropriate or not. His current weight is 4 kg and birth weight was 2.52 kg. At 2 month baby drink 90-120ml but my baby is not drinking this much amount of milk. Why is this so? #Vaccination