FYI we didn't get any instruction/option to redo medical.
The expiry date of PR visa is Sep 8, and insha Allah we will manage to land within this time frame. BTW based on our MP report regarding status of our application processing, we already started planning for leave and other preparation for our landing by Aug end or Sep first week. If I'm not wrong, I assume you haven't received your PPR yet. I have already mentioned that we lived out of India and moved to India in May end. I guess that could be the reason they issued PPR so late in our case. We read in the forum sometimes guys miss the email of PPR. In May we requested GCMS notes just to confirm that we did not miss it. If you are in similar situation, you can also request GCMS for peace of your mind.
They send COPR along with your pp.
I pray for quick endorsement of visa for you and for everyone, well before expiry of medical date.