Sorry, just came across this, and I expect you are under the instruction of your own physio now anyway. How's it going?
I chatted to one of our ortho surgeons about this surgery this week, and he was under the opinion that no particular "physio" was required.
Personally I would advise just range of motion exercises until you are able to weight-bear, and then stuff like cycling and graduated strength training after the 6 weeks are up.
I wouldn't suggest trying to run/jog etc, ie impact exercise, until well after the 12 weeks, and possibly never, given your condition, depending of the severity of the degeneration and how successful revascularization is. I haven't treated pataients with this, personally, but my understanding is that a fairly high proportion will go on to have arthroplasty. I suppose that these days a mid-head resection / resurfacing surgery would be indicated rather than a total hip replacement, if enough healthy bone remains........
Would be pleased to have news of your progress.