29 month old son still drinks baby bottle....

My son WILL NOT transition. I’ve bought him at least 4 different types of bottles for him to transition too and he refuses to. He still drinks stage 2 newborn baby bottle I know I’m crazy for allowing this still and makes me feel horrible.

His teeth are still good and I don’t see anything wrong with them right now and I’ve been diluting his milk with more water for him to get off it.

BUT he is a very picky eater as well so when he doesn’t eat well in the day it makes me feel better that he drank his milk as it does have nutrients and protein for him.

He’s not underweight but he is a tiny baby. Any advice?

Not sure if I should give him his bottle tonight..