I'm also not knowledgeable of this topic, but we used to have a regular poster here, user "patsy10," who wrote about how she developed chiari during her illness. Here is a link to a thread with some of her posts. I'm not sure she comes to the site anymore, but you can try to send her a Private Message through the site.
I'm on the opposite coast, and I saw 4 neuros in a single year. None of them were LL, I think it is difficult to find LL docs in that specialty. If you can find local support groups, they may be able to advise you.
I do think that sometimes with Lyme we forget that there may be separate issues, even if triggered by Lyme, that require separate treatment. I recently started seeing a chiropractor and have come to appreciate this. So I think your attempts to diversify your strategy is wise.
Sorry to not be of more help, and good luck.