D.W.
I would say she should be taking about a 4 ounce bottle by now. i would say she is going to eat 6-8 bottles a day. i would say both formulas are good. i know the prosobee is good because my sister in law liked it but i do not know which one makes it. personally i gave my son the generic formula of what the doctor recommended and it saved money and he did well. bj's or sams will sell the generic or name brand and it will be cheaper for formula,diapers and wipes.