Would they be able to plunder and bully locals enough to make them move away, so that they could take over their houses and start agriculture, education, autonomy?>>9195073
Get yourself some of those oils that unclog your nose - pretty good stuff. Or just sniff enoughly strong toothpaste, works similar.
Get warm but do not make the air in the room necessarily hot - it makes it even harder to fall asleep plus might worsen your already fricked up nostrils. Keep yourself warm and snug under covers while your room remains in or just below under room temperature.
Rember to stay hydrate, piss as much as you can before sleeping and overall, if you sweat at night a lot which in turn makes it harder to fall asleep, ventilate your room and sheets with cold winter air for a short while, basically restart yourself and try falling asleep faster this time.>>9195091
You could always try falling asleep while breathing through your mouth, no matter how uncomfortable that might sound to some~