I have bed fast husband , who needs oxygen & 3 kids. power out 2 days and no heat or gas. almost out of oxygen. Its getting scary.

Block drafts with towels,I udsed old tube socks and stuffed them with those socks that never find a mate and put them between my door and screen door..Bubble wrap is good for that also.. use your blinds and window coverings to your benefit. Open them during the day to let daylight warm your space as much as possible and at night, close them to keep drafts out and warm air inside.

Have done all of that, and staying bubdled but my husband and his oxygen is what is most scary. their are no stores open for miles. roads are closes. i built my kids a tent in the living room and plenty blankets and pillows. their body heat keeping them warm.

Try calling the oxygen supplier. Tell them whats going on and see if theyll get you an extra tank. maybe they can bill you.