We also struggle w/ whether our girls are full. Both have reflux, which is a complication. Often our girls will just stop or push the bottle out after only 0.5 oz of EB. We typically re-offer, over and over and over... We often get into a cycle of drink-drink-push-out. this can go on for 30-45 minutes.
we don't want to force our girls to eat, but when do you stop offering. our girls are twins, so our schedule is pretty important, meaning we hate small feeds as we end up feeding quite often.
are our girls full? should we insist on a full feed (3-4 oz typical) or let them go?