Birth certificate

I am from kerala. In my all documents school, pancard, voter I'd, aadat my father name is written P J John. But in my birth certificate my father name is written Joseph John. What can I do correct my father name in my birth certificate. Other problem is my father is not with us. He is separated but not legal... Even we don't have any idea where he is & don't have his proof or documents anything. In this case how can I provide his identity proof for the name correction. Only I have his name proof dat is in my school certificate & pan card, aadhar, voter I'd. Plz let me know how can I correct that father name which is wrong written on my birth certificate & becz of this I can't able to make my passport.