I do not know how to answer your question about high functioning. Who knows, as my pdoc would say.

As far as you, not wanting to have a caretaker for a husband, and he doesn't want to be one, it speaks volumes to a semblance of healthiness where your marriage is concerned. I feel, it's positive that you seek out your T and other means, to help yourself through you own internal struggles. Sounds like a supportive relationship, something to reflect fondly on.