Currently we supplement about 2-3 oz from a bottle. The born free slow flow bottles we've been using are getting easier for my almost 3 month old to suck down so I am switching to Comotomo... Should I go for 5 or 8 oz? I can't imagine ever giving her that much formula but I don't quite know how much babies take later on. My plan is to continue BFing and top off with formula as needed so I don't know if the 8 oz size is too big with this regime.