My baby is one and a half month old can I give him 90ml of formula milk at a time?

A. The quantity of formula milk depends on baby's weight. baby should be given 150-200 ml of formula feed for every kg of baby weight. for example if baby is 3 kgs then give 450-600 ml in 24 hrs. that is the thumb rule. Divide this through the day. But since all babies are different then the quantity may vary a bit also.  Please refer to the instructions on the box also once where the quantity will be given as per baby's weight or age. One note about formula feeding: It's easier to overfeed when using formula because it takes less effort to drink from a bottle than from a breast. So please  make sure you keep an on the quantity. if you are also giving bresdtmilk then adapt and measure appropriately.