Not walking..?

My son is now 14 months and still now walking. He walks while holding onto furniture but that’s it, he doesn’t stand in his own yet and his balance while standing isn’t the best.. I was a first time mom with him so I made the mistake of giving him a walker the kind that he sits in.. and now he’s 100% dependable on it, when he try assisted walking with him he walks with his upper body first then his feet follow so if I were to let him go he would fall on his face.. any suggestions on how to help him?