In a bit of a situation now, So i received my letter for approval however it states i need to enter Canada on or before March 11th 2021, Because of Medical expiry, I have 6months lease left on my flat in the UK and do not plan to land until July, Does anyone know if i can fly to Canada (say next month) activate my COPR and fly back to UK the same day without Quarantine?
When you say letter of approval, do you mean the passport request?
My understanding is you cannot land and depart immediately but need to quarantine in Canada before returning - I'm only referring to the Canadian side, so it may be further complicated by what UK requirements there are at that time.
We had a similar situation (received COPR and visas with short timeframe remaining before expiry); I wrote about our experience here:
https://www.canadavisa.com/canada-immigration-discussion-board/threads/copr-expired-family-class.715135/
Short form, we wrote to the visa office (in embassy) and heard back shortly and they issued us a longer-dated visa/copr, with no new medical. (We submitted webform as well but the response from that was much later and almost useless)
What we submitted was more or less per the instructions here - but from what I've seen this is not being applied very consistently:
https://www.canada.ca/en/immigration-refugees-citizenship/services/coronavirus-covid19/immigration-applicants.html#expired
Warning: I was a bit surprised at how well this worked but I have NO idea whether this is a new policy or just our visa office. Therefore I repeat: I have NO idea whether this is how they would treat your case and so it is all at your own risk. It would be preferable to land in Canada and remain if at all possible. (It was simply not feasible in our case for a variety of reasons)
I have also heard that IRCC is more-or-less automatically extending validity of medicals, but I can't say if that is an actual policy or just a rumour - but clearly they are doing so in some instances.
So all I can do is share the experience and you'll have to make your own choice. I think it may depend on the visa office you're dealing with as well.
(If I were to do again I would submit the passports with a letter requesting longer validity period of visa right from the beginning but I have no idea if that would work - when we originally submitted our intent was to depart within the original validity...)