16 months is too early. Is he wave Bye, Clap, Finger Pointing ??
is he able to play with you and other kids ??
He used to wave,clap by 13 months.
Suddenly seem to have forgotten and no matter how many time we prompt him.
He wont wave or clap.
He doesnt finger point.
He doesnt interact with me while I try and play with him.
He watches the kids around, but doesnt play much with them
Try to play with him as much as possible and take him outside.
Try to mingle with other kids and if you feel still he has issue.
Check with Child psychologist doctor. I know few doctors which I got to know from other groups
1. Venkatasan, he use to visit Mehta hospital and Child trust hospital
2.Dr.Jayanthi, she has clinic in Nandhnam