Decide the exact new name you want to use
Prepare identity and address proof documents
Draft an affidavit for name change on non-judicial stamp paper
Get the affidavit notarized
Publish name change notice in two newspapers, usually one local daily and one English daily
Apply for publication in the Official Gazette, if required for your purpose
Submit the required documents to the Gazette office or relevant authority
Keep certified copies of the affidavit, newspaper ads, and Gazette notification
Update your name in Aadhaar, PAN, passport, bank accounts, voter ID, driving licence, and other records
Use the same new name consistently across all documents and applications