Hey sweetie, my LO is 24 months old and still having bottles...for the first time the other day he had a few sips of milk out of a straw cup without throwing it across the room and screaming....
I decided not to "get tough" and just keep offering it in different vessels until he accepts it....Tbh wanted him off bottles before the new baby came, but then realised it really wasn't a problem and he will get there when he is ready, don't really feel like it's a huge stress and not worrying about it makes it less of an issue for us both xox
Good luck deciding what is right for you all
xxLizzie