Name changed during naturalization (to Japan) - Procedure for name change in India

Dear Sir, I took up Japanese citizenship in 2019 and as part of the process, I was given an option to opt for a different name. At that time I choose to use a shorter version of my name. This is my current status: (Given-Name Surname) : Swaminathan Ganesh - Birth-Certificate - Indian School and Other Educational Certificates - Indian PAN Card - AADHAR Card - Deed for Property in India. - (Cancelled) Indian passport (Given-Name Surname) : Swami Ganesh - Japan passport - OCI card - SBI NRE account (SBI accepted the old passport and OCI as evidence of name change) My current concern is around: 1) Property papers in India 2) PAN card I don't think I care too much about the other documents (unless you think I should) My question is: 1) To keep things simple and easy for the future, would you recommend that I go through the official name change process in India (affidavit + newspaper + gazette) ? 2) Japan has an official "family register" which is mandatory for every citizen. This document is in Japanese and indicates my old name in it. Would a notorized and apostilled original and English translation be a acceptable and perhaps the better way to evidence the name change in India? 3) Any other alternative that you would recommend?