Change of DOB in Passport

Hi Lawyers, I am facing issue because of DOB discrepancy in my passport and all other documents. I am 28 and working in IT Field from last 5 years. My birthdate as per Birth Certificate is 5-SEP-1991 but someone misentered my DOB wrongly in my school records as 7-SEP-1991 which then propagated to college. degree, my educational and professional certifications. PAN and ADHAR card also had 7-SEP-1991 as my DOB. So all my documents except my passport show my birth date as 7-SEP-1991. I was going to put 7-SEP-1991 only as my DOB in passport but as Birth Certificate was mandatory and Birth Certificate has date as 5-SEP-1991 I had to put 5-SEP-1991 as my DBO in passport. My Question is, Can I change the DOB on the passport ? Which all documents I need to provide? Would I be facing any fines because of this? What questions they may ask me regarding updation of DOB? As per the new law, Birth Cerificate is not mandatory, so can I give ADHAR as proof of DOB? Thanks in advance !!