my son is 3yr 1 month old. he is not talking so much. only little bit words is speaking.

A. Hai good afternoon !!! Check if baby responding to simple commands, talking atleast two word sentences, eye contact, mingling with same age kids, other family members. If not then don't delay consult developmental pediatrician or speech therapist. Some might have delay in speech so nothing to worry and most importantly avoid screen (tv, mobile,tab, PC,laptop) talk more and repeat with baby while he speaks.