Bottle weaning 😩

My son just turned 2.

We have been trying to wean him off the bottle (with milk) for a couple months. We have been able to take out bottles during the day. He does fine with cups / straws for all fluids except milk.

Once in awhile when he’s super fussy he’ll get a bottle

During the day. His doctor wants him to take at least 20oz of cows milk a day, but it’s sooo hard to do this in a cup. He flat out refuses even after attempts of giving milk in a cup. Night times are the hardest. I think it’s more a comfort thing that anything.

Any suggestions on weaning?!