my 2 yr 10m son doesn't want to read and write...if u ask to tell alphabets he will say but.he doesn't he doesn't identify the letters and numbers...also he speak up numbers interruptedly once.or twice but speak up upto 50 but couldn't identify it also couldn't right ..what to do? As he can speak up things like alphabets, numbers, rhymes but couldn't identify the same ..I m worried..is this normal or abnormal???