my son is 1yr 5 months old. He can understand and listens everything we say but cant speak only babbles 1 or 2 words like baa-baa-baa or aw-aaw like these. should i be concern ? when he will speak ?

A. not worry that is lot of individual variation in the development of speech someday the still be having late development of speech continue to interact with the baby to improve the speech vocabulary k