I'm going back a good few years too, but I remember that the steroids got it under control and it's a case of the sooner you start them the better the chances of recovery, so you're already on the road to recovery. I would say it's 3 months till you feel totally normal again, but you will begin to feel the nerves twitching as they return to normal fairly soon.
I do remember some issues with the steroids but I expect they're very different now. However, just in case I can tell you that the GP prescribed a course and when it ended I suffered severe aches all over my body as though I'd suddenly got arthritis in every joint.
I should have been weaned off them and the first GP hadn't taken that into account and another Dr said I was suffering from withdrawal and that if I really couldn't stand it I would have to go back on them and be weaned off. I persevered. He also said that they had a tendency to deplete the body of salt, so I had small snacks with salt at regular intervals and the pain gradually stopped.
No one believes I've had it, so the steroids are good. I have a slight weakness in the side it struck and I can sometimes feel a tighness, especially if I get over tired, and my eye is slow to respond to sudden light.
Wishing you a speedy recovery. Don't worry, it will slowly return to normal.