my 15 month old baby boy is not yet talking, not even saying mama, papa, only makes sounds sometimes, is it normal? what to do?

A. hello mum and that is still find if your baby already started talking the single words you have to start conversation with your baby so that baby understand what you are speaking and try again speaking to you so that is the proper way of communication so how much you are you put the effort in talking that will help you baby to speak fast