hey mick! welcome welcome! that's great that you don't feel like you're getting worse at the moment. i think there are plenty of ppl here for u to commiserate with! sounds like you had a way tougher time getting a dx than i did but i'm like u in that i am treating mine with diet (and some vitamins)
i'm a newbie still working on pulling out of my first attack so i can't offer any perspective on primary progressive or rr or anything sorry
but there will be lots of help to be found here i'm sure, good luck!