Best option is to get divorced in India by mutual consent
2) it takes around 6 months
3) if you are unable to come down to India you can execute POA in favour of family member to file for divorce
4) POA should be attested before Indian consulate
5) if you get divorced in USA by mutual consent it would be Av,I’d in India
6) you would have to file petition for declaration that marriage is dissolved by US divorce decree