how much should baby eat

Chelsea

I currently bottle feed breast milk and nurse (morning and bed time). trying to figure out roughly how often baby should be bottle feeding and how much. she currently is getting 4.5 and that lasts her round 2.5 to 3 hours. should she be eating larger bottle amounts further apart? she's 4 months old and sleeps through the night w getting nursed before bed around 730 then a dream feed bottle around 10pm....