Hi OP. Interesting thread. I have a dissociative disorder as well (although not an official DID diagnosis, as haven't been seeing a psychiatrist for ages, and I'm making it my mission to never see one again, or to have a single more assessment). I can definitely relate to most of the things you write about, although the specifics of my alters are different, of course.
I find it interesting you're having so much support from the MH services. I've been firmly put in the camp of "you're not suicidal, so you're not ill enough to see anyone". I have a lovely private therapist, though, who's helped me to make sense of my situation more than anyone else ever has in the past.
Funnily enough I can really relate to you health guru personality! Food, exercise and healthy/unhealthy habits are the biggest every day conflict between my parts. I think I must come across as extremely flakey often - all full of vegan foods and yoga one day, and well, definitely not always.
I haven't RTFT as I'm attempting to visit family atm and everything is stressing me out, but I'll get back to it.