My son is 12 months and refuses to tip any bottle or sippy cup.. he’s finally not taking a bottle at night and I would like to finally get him in sippy cups during the day because his bottles have so many parts (😫hate cleaning them) he will use the nuby 360 bottles but not the sippy cup top.. and the munchkin straw cups he wont use and it seems the straw is too small for him.. but he will not tip up any cup or bottle to get anything out.. i feel like i went wrong but not trying to introduce cups earlier.. any suggestions on cups with larger straws that dont leak (too much) when thrown or how to get him to learn to tip his cups..