The custody of a Hindu child is governed by the Guardian and Wards Act, 1890 read with the Hindu Minority and Guardianship Act, 1956. As per the Hindu Minority and Guardianship Act, 1956 the Hindu child below the age of 5 years shall be kept under the custody of the mother as till this age it is only the mother who can give proper emotional, moral as well as physical support to the child. Also custody is give for best interest of child.so you will probably get the custody of your child.
You can seek custody of your child by applying in court for custody along with divorce and maintenance.
Yes you can get the interim custody of child.