Pricedure is a procedure and you have got to follow tjhe procediure whatever your problem,s may bbe.
There is no shortcut process of obtaining a succession certificate. The certificate is granted by a competent civil court after you file an appropriate petition mentioning the details of legal heirs, property etc. The court will thereafter issue notices to all the legal heirs to attend the proceedings.
You can get the notices served quickly by getting the vakalatnamas of all the legal heirs filed in court. By this manner you can save time in service of notice. The rest will be done as per the procedure