Hello Girls, who's on IV, how many babies do you guys feed at once by…

Hello Girls, who's on IV, how many babies do you guys feed at once by volume? And what interval do you feed? We switched to formula, so we have some confusion. It eats 40 maybe it can eat 40, or it might eat 80. I also think it became much less suckling. On formula only for the third day full. Maybe this is due to the transition. And there needs to be further adaptation. Who can tell me something? ? We're almost three months old, without a couple of days.