Milk intake

Aww mama, don't worry, a few of us went through this din! Usually at 3 months, babies' tummies are still adjusting, and sometimes they get gassier or their suck-swallow rhythm changes, kaya mas konti lang ang kaya nilang inumin without spitting up. Try burping him more frequently during feeds, maybe every 1oz, and see kung mas better ang vomiting, honestly most of my mum friends swear that pacing really helped. But since he's vomiting consistently, better to check with your pedia just to make sure walang reflux or other concerns, especially since he dropped from 3oz suddenly. You're doing great, first-time momming is so stressful!