This is conjecture, i want to make that clear, but i would gather you need a remedical as they've returned the status back to the default for the medical.
Given how short the period until its expiry, i'd gather it's also pretty likely based on that as well.
But there are also people here who have not been requested new medicals with their PR visa and COPR also valid for about 2 weeks.
It can go either way.
I know what the stress is like, been through it myself. I'm rooting for you guys to get it soon.
PS: You also have to factor in the processing time for your PR visa and/or COPR, which can take up to a month from what i've been told.