Suggest Treatment For ADHD

6year boy is not talking he never ask anyquestion he have problem either adhd or autism iwant to know if iget any help from nimhans bangalore.he is in speechtherapy and having medicines ATTENDROL 10Mg.1/1/0.prescribed by psyciatrist medical college triissur.they advised as to show him in nimhans and he will improve if he gets behavioural therrrapy as well as speech and medicine from a better docter from nimhans.from whom i should meet?and which section?