Hi, My Baby Is 5 And A Half Months Old.

Hi, my baby is 5 and a half months old. I started giving lactogen 1 . the problem is that she always remembers mother feed on sleep at noon and refuses to take formula milk. Keeps on crying. I have only ten more days to return to my work. Suggest me how to change her from bf to bottle feed. Or should I switch over to other formula milk like nan. Because I'm not sure she likes lactogen.