Do any of you mix breastmilk and formula on a regular basis? I started doing this because after LO got so used to the taste of breastmilk that she refused to drink formula. I want her to be able to drink formula so when I start working again she wont have issues adjusting at day care. LO is able to drink formula now but I stil give her one bottle a day of mixed breast milk & formula. will this confuse her? do any of you do this regularly?