M.C.
Well, one of my nieces would only drink "pink milk"........whole milk with the strawberry nestle in it. I remember my sister-in-law worrying about that, but her doctor told her it was totally fine....just as long as she was getting that whole vitamin D milk. We made it through the transition to whole milk with our first born by warming it up slightly in her sippy cup. She liked it once the chill was taken off of it. After a while of that, she started to drink it straight from the fridge. So maybe experiment with the different flavorings and trying different temps along with the different types of sippy cups. Hopefully, eventually you'll find that magic solution for your little one. Good luck!!!