The laws governing child custody in India are the Guardians and Wards Act 1890 and the Hindu Minority and Guardianship Act 1956. The Hindu Minority and Guardianship Act states that the ‘natural guardian of a Hindu minor, in respect of the minor’s person as well as in respect of the minor’s property …. in the case of a boy or unmarried girl- the father, and after him, the mother, provided that the custody of a minor who has not completed the age of five years shall ordinarily be with the mother’.
you can file for custody in india as child is at present residing in india .