I believe that you're in Ontario. If so, there are legal ways to terminate your tenancy early (one month); such as assigning the lease or subletting your place; Refer to this link https://www.cleo.on.ca/en/publications/moving/legal-ways-move-out-early
I personally was about to move out from my place in Toronto few months ago and the landlord agreed to shorten the minimum leave notice as long I take care of finding the new tenant (which is very simple thanks to Kijiji & Facebook market)
On the other hand, you can always use a friend address to receive your card while abroad if you have to travel before getting the pr card.
Thank you. I think I should just wait till get the card because I'm going to stay abroad long term...