S.M.
My son is the same way. He won't hold a bottle or sippy cup himself either and he is 13 months old. I think it might have something to do with the fact that I am still breastfeeding him also.
Anyway, I would try what other people are saying. Mix formula or breastmilk with the whole milk. Sometimes that works, other times not. With my kids, that didn't work so I just flavor the milk with a breakfast mix. My kids love strawberry but you could also try chocolate or vanilla.
Also, even though it is more expensive, they also do have a formula for toddlers. I think they even have one that is vanilla flavor. They can drink that until they are 2. I think it is made my Enfamil. You could even try that.