FTM here...I'm ready to start giving my son a bottle or two of pumped breast milk a day. Problem is...I have NO idea how much to put in the bottle. Being that I've only fed directly from the breast, I have no idea how much he gets at each feeding. 2 oz? 4 oz? I'm at a loss.I know I can just feed him until he quits like he does at the breast, but I could really use some direction.Thanks!