Hi there, and welcome to the group - sorry for the reason though.
I know you are concerned about the future, and I know first-hand how scary this is, but believe you can get better and pursue every avenue you can find. Personally I've done vitamin regimens (Vitamin E and Biotin are good for the brain I've heard), homeopathy (if you can find a good homeopath - mine is in Virginia), and now I'm doing acupuncture for nerve pain.
The first doctor I had sent me back to work after 3 months telling me I was all better - I thought I'd gone crazy! I wasn't better, but he knows, right? WRONG! I struggled to survive a few hours each day at work and it was truly awful! Finally I found a doctor that had at least heard of ADEM. She allayed my fears. Here's what she said to me that really helped:
"If you broke your leg, we'd put it in a cast and keep you from using it while your brain sent information to your leg to heal. Then we'd slowly do therapy to strengthen it before using it at full. You (I) broke your brain! So it's sending information to heal while still having to work at full! It's going to take time."
I don't know if that helps, but it helped me. I'm at 3 1/4 years now and still improving ever so slightly. In the first 6 months, I made great strides, but now it's tapered off. It's really hard to be patient (for me, anyway), and the Social Security disability slowness has made it even worse. But I am encouraged, and I hope you can try to let your body heal.
I posted about a podcast coming up next week from the Transverse Myelitis Association on ADEM. It might be worth your while. Also the TMA has resources for doctors that are familiar with ADEM - but there aren't many.
If I may ask (as I'm compiling data to give to researchers about adult-onset ADEM), what brought yours on? An infection or a shot?
Hang in there - I think it will get better. Also there's a TED Talk called "My Stroke of Insight" that might be encouraging. It's be a neuro-researcher who had a massive blood clot in her brain and had to relearn everything INCLUDING THE ALPHABET! And she got full functioning back. She also wrote a book about her experience.
Hope this helps a little. If you want to "chat" more, you can email me at ■■■■■■■■■■■■■■■