Yeah, I know what you mean, the healing process is often more frustrating and agonising than the accident itself. The best bet is to move as much as you can without pushing it as you can suffer more later from muscle wastage brought on by the lack of exercise. After an accident like this sleep is very good BTW.
I was off my leg for a month with my knee injury but I would have been better off using it a bit more everyday as the weakness in my leg that I had when I became mobile again was down to lack of exercise rather than the injury itself!
The NHS didn't offer any aftercare or advice and it was only when I went to see an ostiopath that I found I should have been up and about in two weeks, best £40 I ever spent as I thought I'd not be comfortable on an upwrong ever again!
Take your time and have a nice cup of tea, count your blessings and start dreaming of that new bike.