Change DOB in passport

When I applied for a new passport, my original date of birth was unaccepted as the date of birth in my school certificate was different. As I didn’t have any other option, I got the passport with the date of birth mentioned in my school certificate. As my parents were not so well educated, they gave the school my date of birth as 14th December 1959 whereas the actual year of birth was 14th December 1960. Recently, I came across this – Documents required for non -ECR which stated Birth Certificate issued by the Municipal Authority or any office authorized to issue Birth and Death Certificate by the Registrar of Births & Deaths OR School leaving certificate / Secondary School leaving certificate/ Certificate of Recognized Boards from the school last attended by the applicant or any other recognized educational institution. Hence, I got the Birth certificate from the municipal authority to prove the correct date of birth. My Aadhaar, Pan Card, Driving License, Bank accounts, and every other document has the correct date of birth. I booked an appointment online at my nearest passport center and they have redirected my request to the regional office in Kormangala. The police verification is done. It has been more than 15 days and I haven't heard anything about it. I don't know what to do next. Wait for the reply from regional office or book another appointment online.? Can anyone please guide me?