Hope you have some back up for heat.
I knew a family that brought a medium sized tent inside and rigged up ‘jar’ candles to stay warm when their power went out...remarkably it worked.
I think they used a short step stool with a metal tray underneath, to give it elevation...but not so high there was danger of fire.
Also read where a couple actually put a pup tent on their bed for sleeping at night!
I guess when it’s that cold you do the extreme to stay warm!
That’s why beds used to have bed curtains. No central heating.