I am at ADR stage right now.
Case analyst has marked my profile as Review Required on Jan. 24 and I got ADR on Feb. 3 which I submitted on Feb. 11.
I'm not a 100% caught up on this, but I know there is a temporary ircc public policy regarding Upfront medicals for PR applicants. So depending on who's handling the case, you might be required to redo the medicals or like someone responded on here, you may be eligible for an extension based on this policy.
Given the expiry date, if the officer handling your case is quick and all your documents are in order, they can fast track your FD and copr documents because of the deadline. However, IRCC continuously does whatever it likes so I would just bear in mind that it might be possible you would have to redo the medicals, but you could also qualify for an extension.