I've been having this issue for the last few years where I can breathe just fine during the day, but when I'm sleeping, particularly in the early mornings, theres this sound from my chest and I struggle to breathe properly. I end up waking up and have to do some breathing exercises to feel normal again. Even though my lung function seems okay according to the doctors I've seen, this is really messing with my sleep, and I'm not sure what to do about it. Any advice?