If your son is finishing his bottle within a few minutes and not falling asleep with it or taking long to drink it, it would not be harming his teeth. Also, make sure he is brushing his teeth before bed so the sugars in the milk are not going to decay his teeth.
How many bottles is he having a day?
My 22 month old son has one bottle of whole milk after supper that he just goes crazy over...............we want to stop this before his 2nd bday and I'm not sure if I should just go cold turkey or gradually lessen the amount in his bottle day by day.....
My dentist and his doctor said this one bottle would not do damage to his teeth because of the fact that he is finished it literally in about a minute and then just hands it to me and we brush his teeth everynight before bed...it's just a comfort thing for him
My dentist who also has three children of his own told me that sometimes if you break a child off a bottle too soon, they resort to thumb sucking as a comfort measure....and this can be very bad for their teeth.
My son has never taken a soother or sucked his thumb so I am not worried about his teeth.