My girl does 3-5 ounces every 2.5 to 3 hours
@ 3 months every 2-3hrs 5oz BUT my baby is now 11mo and is now 7 1/2 oz but any more than that she can barely move. Overfed baby usually results in a lot of spit up. An underfed baby is very fussy after a feed
Overfed baby you’ll know because it’ll be projectile vomiting or like she said above a lot of spit up. If you’re not feeding enough, baby would be fussy after a feed. Sounds like your baby is fine with 4oz if he’s not fussing after feeding him the 4oz 🙂
My baby just went on to 6oz because he was still hungry after 5, He’s 4 months on 15th March xx