I don’t have any experience with your injury specifically, but I’ve had plenty of downtime from injuries and illness.
The best thing that I can suggest is to think of your recovery as your current training. Postpone any fitness training until you can do it pain-free. And even then, be cautious.
Think of your physio and rehab as your current training regimen. You’ll want to do it regularly and thoroughly so that you can later build fitness on top of a solid foundation.