Oh my, sorry it took me so long to see your reply. Miles is still struggling on and off with his bloody nose (he had another incident just a few minutes ago). I tried taking him off bedding completely, but that didn't help, then i tried turning the heat off and keeping a humidifier going, but I can't tell how much that has or hasn't helped. I'm beginning to think it's just the way it works with nasal polyps in humans, where sporadic nosebleeds happen but humidity seems to help calm it down.
His vet seems to think the reason he sometimes goes into respiratory distress is because he might be inhaling some of the blood back into his lungs or it's causing a blockage and he panics, but hard to know. The fit slows down once he has sneezed up some sizable chunks, which look like blood clots but I'm not sure. I take him into the bathroom to sit him in the sink until he's done, and just wipe his nose and pet his head until it's over, which makes it easier to clean up after. I'm always washing blood stains off his things and the floor around his cage, at a loss for what to do anymore but love on him and take care of him during his episodes, because steroids and antibiotics didn't change anything, unfortunately.