Breastfeeding mommas- 3mo old spit up

Lauren • FTM, Sonny - 38w2d

How long does your three month old feed for on the boob?

Mine feeds for ten minutes and spits up his meal... I’ve always heard if they spit up it means they’re full... but i feel like only ten minutes is short??

If we bottle feed he usually takes anywhere between 3-5 oz depending on how hungry he is. Im just wondering if maybe we should just exclusively feed from the bottle so I know how much he’s getting or no...