12 July 2019
Ji, you consult in Tahsildar Office of your area. A public notice shal be issued in a largest circulated daily NEWS paper. And there is a formate for changing name which may be obtained in Revenue Office. You shall give an affidavit to be notarised by a Notary and get it attested by the Magistrate of the District. It shall be submitted to the Government through Revenue official for publication of Gazette.
13 July 2019
Publish new name in 2 (English + local language) newspaper after execution of affidavit and get it published in gazette. Consult a local prudent lawyer for better appreciation of facts, guidance and proceeding.