What makes you a professional when it comes to what other people think is a big NONO? I am assuming you are a pediatrician or in some other infant care profession!
My daughter, just turned 3 in August, is also on a bottle and will be for a few more months. She was born with a cleft pallat and has a hard time drinking from a regular cup, quite frankly I am not interested in pushing her to please anyone else. My daughters doc, my husband, also thinks this is best for her.