I know how u feel.
Plz go thro this link
Till the age of 5 the early intervention period,no diagnosis of developmental delay stays with kids.So u have 2 more yrs to go and even later U R THE ONE WHO IS GOING TO MAKE UR SONS LIFE,BUILD CONFIDENCE.HE IS UR KID.
When u read the link above u will know the strength of mother.
Plz go right docs,right therapist.
Have u been to communication deall.Dr.Prathibha karanth ,I hav heard good things about her and she largely deals with autistic kids.
Become member for autistic kids forum,lot of mothers out thr are a great support and all the treatment aspects are discussed and u know what is right and wrong.
Yest my son cam back from school and asked me what is autism and aspergers,he is 9 yr old,one of his classmate told him yest he is one.This is the way kids are treated and felt one among them in a mainstream school in US.
i am not aware of how it is in India.