Going from formula to whole milk

Definitely offer whole milk now to her. I hope she is already taking a prescribed Vitamin from the DR. If not, she should absolutely have a daily Vitamin. Talk to your Dr. too. If she is eating healthy, less formula should be fine but supplement with milk & vitamins.

Well I would go ahead and try the whole milk,,,or perhaps try switching to a different formula,, perhaps she just is over the taste of the brand you use now,,,Talk to her doc about vitamins,, good luck momma~

How about just feeding her table food instead. If she's on table food then she gets the vitimins and minerals that she needs daily from that. There are a lot of iron rich foods like beans, dark greens, meats, etc. You just have to feed her a well balanced meal along with what she gets to drink.

I would just do a healthy well balanced diet for her that will give her all the vitamins she needs a start the whole milk

She can drink water. Cow milk is for baby cows, and humans don't need it. Like many other nutrients, and despite the claims of the dairy industry, plant based calcium is superior to animal based. While cow mild is rich in protein, the kind of protein that is contains is casein, while human milk protein is lactalbumin, with is easily digestible; more the 50% of casein isn't digested and can cause health problems later in life, like food allergies. Here is some of what the doctors at the Physicians Committee for Responsible Medicine say: http://www.pcrm.org/health/prevmed/building_bones.html