I also have an MLC h and have been following your sitch and noting the close parallels with what I'm experiencing.
I just stumbled across a poster here who has described the most amazing mlc journey that I think you might get some benefit from.
It's in piecing, of all places because, despite the extremity of her partner's mlc, he came back - eventually. BUT, as she documents in painful detail, there often seemed to be absolutely no hope along the way.
Anyway, have a look at AliSuddenly's story - for me it's been a sanity-saver:
