My daughter is a 1 month old. In the beginning she was on similac advance from WIC. But it made her so gassy and fussy. So her pediatrician switched her to Pro Sensitive, and it worked wonders with her she is also colic. The only thing is I can't get it through WIC. So we are trying soy for now and she is extremely fussy. We started it friday and it is now sunday. I know it takes them awhile to get used to it but she seems really uncomfortable. Is there any other assistance programs that would help with formula?