Webform is not a write option in this case, you have send email directly to IRCC INDIA address including OTTAWA email address.. that is the process. i did it for my dependents. they responded in a week. web form will not work for this scenario. so be fast.Congratulations on your PPR.
You need to raise a web form to CIC informing that your current address is India. They'll send you updated letter and you can submit your passport to VFS in India based on your current location. CIC generally replies within 5 business working days.
DELHI-IMMIGRATION@international.gc.ca
CPC-CTD-Ottawa@cic.gc.ca
thanks
ibrahim