I have done that in April 2019. I applied in Canada and when i got ppr request i flew back to India and then a week later i went to vfs with ppr letter and gave my passport.( They did ask me about biometrics but i told them i applied in Canada and biometrics back then was not mandatory if you applied in Canada) And 5 days later i got my passport back with the stamp.
NOTE* since covid, the processing time is longer and I think, you have to send your passport through courier at vfs facility as they are not allowing walk-ins.