Well after 3 years, finally got a COPR and PRV Visa stamped on our passports!
Last year in April, IRCC issued the PPR but was told not to send the passports as their offices were closed. I wasn't comfortable sending it later last year as I thought I would get a month or two extension on COPR to complete the landing and it won't be possible due to border closed and all the quarantine measures. I finally sent the passports before few months once Canada relaxed the quarantine rules. However, I got the passport back and an email from an agent saying that they will trigger a re-medical for COPR extension. We completed re-medical (FYI it was the third re-medical I did - all of them were cleared) and then they issued another PPR with passport requests. Sent the passports two weeks back and got them back today with the COPR and corresponding PRV stamped. Have till August 2022 to complete the landing now. Good luck everyone!