actually tell whether it feels hot or cold. simply put on some cold pajamas, grab a flashlight and read.
what should you do if you wake up in the middle of the night because of the cold?
grab more covers or tuck your head inside the cover, as this warms your entire body. if you have a furry friend allowed on the bed, cuddle with it.
how can you stay warm when you can't adjust the heat?
instead of turning up the heat with a thermostat, simply do it physically, use a flexible blanket, put on some warm pajamas, a blanket, a heating lamp, and maybe a hot water bottle which can be moved 