My son turned 2 yesterday. He rarely responds to his name, repeats alphabets and numbers ( he knows all 26 alphabets and numbers 1-10) all through the day. He recognizes some other things like apple, bus, car, fish and says them too. He says mama and papa but we are not sure he is addressing us. His eye contact is ok, from the last 3-4 months his screen exposure has inceased around 5 hours a day. Our padetrician said he can go for behaviour therapy. Kindly help and suggest.