Hiya Aussie,
Just thought I'd throw my 2 cents worth in.
When I came off mine, I reduced very slowly for about 6 months. I still got the shakes and Insomnia. It wasn't very pleasant, although it doesn't sound as bad as what you're experiencing!
A couple of months later, (so 8 months in all) I finally felt I was rid of it.
So hang in there
Hugs to you from the other side of the country ((((((((((()))))))))))
Noong