I had thought about that, but unless he's 100% on Sunday, he's gonna be in bad shape for quite some time afterwards. He's risking a bit by playing without being fully healed. I'm obviously not a doctor, but given his style of play, I don't see any scenario where he won't worsen his injury by playing, whether he's fine through the game or not, I think he'll be leaving the stadium in a boot again.
I hope him even being 'limited' in practice is even better news than we are thinking, but I'd just personally rather him simply take mental reps and not do anything that can possibly make it worse. It will take a bit of exerting in order to get it to a point that he'd have trouble with it at halftime, I just don't see the point in TRYING to get it where he'd be at halftime on gameday.
I've run my AFPT (army's PT test) on a high ankle sprain and couldn't walk for a few days afterward. I'm just being worrisome is all.