My son did the same thing when I tried to gently switch him...definitely stick with what the doc says about one ounce of milk at a time, especially if it's pasturized the body takes strange to patsturized milk because the enzymes to digest it are heated out, so go gently with the switch it could take a while. One ounce added to the formula each week or two is safest. As for refusing to drink, I was told by my holistic ped. that if the child is hungery they will eat: do not be too concerned if they are refusing change, just keep offering one day they will accept. On average a child will refuse a new food 9 times before taking to it, that one was from Dr. Oz As far as nutrionally your baby is almost one and is eating solids so just make sure that you are offering enough nutrients, as for the fat intake add some olive oil or coconut oil to the food to make up for what she is missing in the milk/formula. Also, DO NOT give soy milk as one gal suggested it is very dangerous for all children, soy formula should not even be sold. Soy is proven to bring early puberty in girls and delayed in boys, it is a tool for menopausing women to add extra estrogen like compounds into their diet and women in asia feed it to their sexually insatious husbands to lull theirneed for sex. You do not have to look far for on the net for these sats about soy and the dangers of it. Sorry about the rant but the push for soy publically by the diet dictocrats is very concerning. Anyway, it took my son a few days to get him to drink the mix after that it was a breeze. Good luck and God Bless.
R.' D