I think your life sounds very hard op, you have chronic fatigue, both children autistic , don’t get on, and not able to be in education, one father with cancer, another a domestic abuser, a dog, two cats, no family near by, and a long distance boyfriend who lived in a house share, and you are financially having to live on benefits.
i understand why the thought of this would be daunting, as it will be two weeks of upheaval and people in the house. But you’re right, it’s better to be there.
if it helps, the upheaval is the moving the stuff in and out of the kitchen and it being out of service. Move everything out and get your boyfriend or kids to help you, everything into the living room.
find a space for your microwave and air fryer, buy some paper plates, cups and plastic cutlery off Amazon, enough for 2 weeks, for you all, inc your boyfriend , say using 4 a day each, place the breadbin somewhere on a surface. Same as the kettle, Keep things like ready meals, butter, cheese , milk, outside,it’s cold enough, and buy things like pot noodles, tins of things, to eat.
just the three of you then shut the doors and stay in your rooms all day, only come out for the loo or to go into the living room to make something to eat, I think from what you say, you all spend times in your rooms anyway, the workmen will come and go,
generally they will start about 8, finish by 4 latest.have 3 breaks in the day. In the big scheme of things a couple of weeks will pass quickly, and it will be interesting to see the new kitchen take shape, each night after they leave.
then you move your stuff back in and it’s done. 💐