Prepping camper for freezing temps

Yesterday & today ive been prepping my camper & helping prep all the animal cages on the farm because we are getting freezing temps tonight. Theres not a whole lot to prep but for the camper I have to empty out my water tank (& turn it off) and turn the hot water heater off as well, fill up on water with gallon jugs & I also have a large filer water container with a spigget. I wont be taking any showers in the camper since I wont have any water in the tanks & I can not go into the main house because Laurnes husband, Quintin has covid. SO I will need to drive about 20 minutes to my parents house to shower. Idk if I will tonight but will tomorrow night. Im also slightly quarenting because I was exposed by Quintin. He wasnt feeling good but came near me anyway (not knowing it was covid but with a 102 fever apperently). I dont go anywhere nor hang with many people anyway so it dosnt bother me any lol. Im feeling fine so far and was exposed Tuesday & will go get tested tomrrow morning before going to my parents and having Fred over Saturday. My camper also has a heater but weve (my family) have never used it because we dont fully trust it and the campers is pretty old now. So since its also old (2001 camper) & my parents not taking that great of care of it threw out the years I have huge holes that are not really visible but in a heavy freezing wind itll come threw and make the camper unbearable. So for the last freeze I took some towels and plugged up with holes with that lol & used electric tape for the windows. It sounds bad but its not really. I also have a small heater that I keep on. Its brand new and if it falls it turns off, so its safe. Along with a heated blanket and wearing warm clothes im pretty set. I also had to make sure that I washed all of my dishes & use the remanding water in the tanks and will need to open the valve for the tanks not to freeze. So most of that was done yesterday and today I just have to make some calls about food stamps, my bank account, etc and Daisy & I will just be chilling today/tonight watcing movies & reading. Heres some photos of my fav little nooks of the camper ( & my new little accordion shelf my dad made to hold Freds accordion so nothing happens to it while im borrowing it)!