Hey R6 Racer,
I would have replied sooner, but hey, you've got time, right? Heh, heh.
I can relate to what you're going through. I've had a few ankle sprains in my day, and as it happens, I'm coming off a pretty badly broken right foot. Back in November, I crashed the R7 at Buttonwillow, and I broke four metatarsals in my foot. I had surgery to install a plate and three pins in the foot, and I was in a cast until mid-January.
After that, I was wearing a hard-sole shoe thing for about another month or so, walking with the aid of a cane at first, then walking (well, limping...) unaided by mid-February. My first time back on the track was the first of March, four months after the crash...
Although I've been through this kind of thing before, this was the worst, as far as time off the bike, and the extent of the injuries. So there
was a sliver of doubt in my head about whether I'd be able to go 100% again.
Well, within two laps of practice, I felt like I hadn't even missed a race! Things were flowing, and my only real problem was a little muscle fatigue, due to being relatively out of shape.
At the start of the first race on Saturday, I went from the fourth row of the grid into about 6th or 7th place by the time we came out of the first set of turns, and I ended up passing a couple of guys and finished 4th.
Unfortunately, Sunday's forecast was for rain all day, and (I think I've mentioned this before...) I DON'T DO RAIN!

So I sat out the day. But it felt really good to get "over the hump", as it were.
So, basically, the key is to just get back out there when you can, and just think about your racing, and not about the injury. Since it's your right ankle (the Fibula is the smaller leg bone, by the way) it shouldn't cause you too much trouble, as far as actually riding. Unless you're a heavy rear-braker... (?) Left ankles are much more of a problem, since you feel it every time you shift!
You'll be fine. When you get back on the track, make a point of hooking up with someone fast, so you can concentrate on dicing with them. It'll take your mind completely off your injury, and once you get that first race out of the way, you're good to go...
Good luck!
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I'm not joking. And don't call me Shirley.