You have not indicated whether you're exempt from travel restrictions or not, or if you are from a visa exempt country. If the first condition is correct, even though inconvenient, the best course of action is to travel and stablish residency. If you are not exempt from travel restrictions; however, your CoPR will expire, and you should await new instructions from IRCC. (If your medical and visa also expire, you will receive either a medical extension or remed request, and new PPR in time)
On the other hand, If you are from a visa exempt country, IRCC might extend your CoPR.