1. I do not think the dispute is going to be resolved so soon.
2. It will be better if you come to India with your son and file the case for divorce, criminal case against tortures and case for maintenance of yourself and the child.
3.Once you file the cases from India which favours the distressed women, he will be forced to come to an amicable settlement.
4. Whoever writes anything about the maintenance and the custody, the same can always be retracted later on as legal rights can not be wived in writing.