Toddler trouble with bottle

Angela • Mom of 2 boys and 1 girl who are my absolute world .👦🏾👶🏾👶🏾😍just a Queen of the castle whose adjusting to This Journey call motherhood

I’ll probably get bashed for this but my son is 15m and I’m just now taking the bottle away I took it cold turkey from him and tried offering milk into his 360 cup he’ll drink some and throw it down so he doesn’t drink his full amount of milk he drinks water great In his cup but the milk no ...how can I fix this ?plz chime in especially pro moms lol