I’m having such a hard time trying to wean my 1year old. He had a milk and soy allergy so I was on a…

I’m having such a hard time trying to wean my 1year old. He had a milk and soy allergy so I was on a strict diet now that he’s 12 months he can have dairy but he hates cows milk and only drinks water from a bottle. He refused to drink cows milk and only wants to breastfeed. I have to stop because my Dr. said it will cause contractions and I hate that I have to stop but I have to. He literally attacks me to feed lol.