Ah, yes—the hearing aid thing adding to all the other stress! I can identify with this! Most of the time my husband won't even wear his. I finally started putting them on him, and so far, he hasn't objected. I wish I'd done this sooner. Trouble is, one of them has an extreme amount of static that can be heard from across the room, so we need to take it to get it fixed. That's an hour and a half drive one-way, though, so it will be a while. Today he's just wearing one. Better than nothing. And, like you, I hate when I shout so he'll hear me and I sound irritated. On my good days I can shout without sounding irritated, but on my bad days (and today is one of them), my irritation comes through.
As for sleep, I started sleeping on the couch while taking care of another dog who we were providing hospice care for (not the one who just died, but the one before). She had to go out 1 - 3 times a night. I sleep much better on the couch, so I kept doing it. Even before that, we had separate bedrooms for a few years. My husband was the one who moved to the guest room back then because of yet another dog who required nighttime care. He seemed to like having his own room—and it looks like a teenager's room. 🙂 Clothes everywhere, skis in the corner, etc. Messy, but it's his and was like that before he started having dementia. Fortunately, he sleeps soundly so far. And he goes to bed early, while I sit up on my couch/bed and read in the quiet. I really look forward to that every night. I need it.
My husband threatens to climb in bed with me from time to time. I absolutely don't want that. I need my alone time and I need to sleep. He insists on tucking me in and comes in and out of the bedroom two or three times before he finally heads off to sleep himself. I find these interruptions annoying but I guess I can put up with them since I'm not doing a lot of the other things he wants. I'm sorry this is a bad day for you.