Hi there. Not many of us around as GBS is very rare. I had the combo GBS/MFS (Miller Fishers Syndrome) 30 years ago this March. Not fun to deal with since I had total paralysis from head to toe but I've muddled through all these years. In my case, there was no treatement since the blood filtering wasn't in use then nor was there much physical therapy support. Upon release from the hospital, I was pretty much on my own.
The key is, since nerve damage is involved, when you feel drained/tired, don't hesitate to give in to it. Unlike tired or sore muscles, there is no real way to "build up" the nerves. They will heal at their own pace.
Were you hospitalized with yours? On a ventilator? Total paralysis, partial? All of these can factor into your recovery. For many years, it was thought that patients recovered fully. Now it is thought that, like its cousin polio, GBS does leave a survivor with residual effects. Dr. Gareth Perry at the University of Minnesota medical school has written several articles regarding post-GBS. Just do a search under his name and some of the online articles will show up for you.
One thing to avoid as much as you can is any kind of stress as that seems to aggravate any residual symptoms.
Good luck and don't worry. 30 years later, I'm still on my feet (can even manage all of Future World and World Showcase if I take my time) as well as work a full-time job.
Don't hesitate to PM with questions. It is a frustrating disease but it is manageable. I find the most difficult aspect of it, now that I'm in my fifties, is trying to determine what are new symptoms (i.e., new disease such as RA) or what are old symptoms that are just worse now that I'm older.