I was told about a week ago that I need to cut my daughter off formula and only give her milk from…

I was told about a week ago that I need to cut my daughter off formula and only give her milk from now on. And I've tried everything I've heard from mixing her formula and milk to putting it in her cereal. And for some reason I just can't get her to take it. She only wants formula no milk. Any advice to get her off it?