My LO is 2 weeks and 2 days old. At some time of the day he would be very hungry and drink more milk than he usually drink. And he may stop for like 5 to 10mins and then asking for milk again. I have not enough breastmilk so I let him drink formula milk to ease his hunger and after all the milk he drink, he vomitted.

How much is ur child drinking from bottle ? It's best to latch on demand to build ur supply up. Sometimes they just may not be hungry but just wana suckle for comfort. As its easier to take milk from bottle he may take more than needed. This maybethe reason y he he came vomited.Is he properly burped after feeding as he may take it air after bottle feeding. Spitting milk is normal but vomiting is projectile n much more . Try to keep him upright for at least 20 mins after each feed n monitor if he continues to vomit after each feed.