Dear OP,
I had a few years just like that. Awful. Felt such shame about them. They were linked to a sort of dark triad: perimenopause, depression and vitamin and mineral deficiencies. I already had them, but then had appalling post-viral fatigue and they got worse and worse. No idea what came first but I had to work on all of them.
Did you have Covid? Could it be long Covid or other post-viral fatigue?
If you haven't already, I'd get hold of some herbal iron capsules like Floradix (expensive or feroglobin (similar but slightly cheaper.) Also please get some Vitamin D spray. D-deficiency is very common and its key symptom is acute sleepiness. If either of these are the problem, you should start to feel a fair bit better within a few days. Also take Vit B complex tablets. They are cheap. B-deficiency is very common in people with depression.In total, they should come to about £20-25. It may seem like a lot of money, if you are a single parent with no job, but I'd live on value beans for a week to buy these and try them.
You could ask the GP for blood tests but NHS ideas of suitable levels are not always in line with optimal health. They might say you're fine but you might still see a big difference.
In terms of doing stuff - I started very small. Try Flylady's 5-minute tidy ups. They are unbelievably powerful. In 5 mins you can open windows, make a bed, put dirty washing in the machine, and the bedroom looks half-way presentable. In the kitchen you can put all dishes in the sink in hot soapy water, or in the dishwasher if you have one, chuck out any junk mails, empty food and drink packaging, empty the bin, wipe the surfaces. In the bathroom, a quick polish of taps and mirrors, chuck out empty product bottles, straighten the towels and clean the loo with a loo brush. I can do each of these in 5 mins. I used to do 5 mins and rest for 55 then do another room for 5 mins and rest for 55 again. Do that even just 3 times a day and you will, over a week, have done 1 hr 45 mins of tidying or cleaning. That's better than none. And you'll probably find you do more than 3 x 5 mins a day once you get into it.
For good routines, Flylady's 'homeblessing' is just an hour - I did Saturday mornings. You just open windows, empty bins, change the beds and run a quick hoover around the bits of the floor you can actually see.
Another tip is:When you wake up, stick a washload on a quick cycle - better a quick wash than no wash.. Make DC's breakfast, walk them to school and when you come back, the cycle is done so you can hang the washing out while you have a cup of tea. Do that 3 times a week. On the other days, pick anther simple job - maybe put dishes to soak in very hot water, then when you get back from school, put on a song you love, loud as you can, quick wash, rinse and let them drain dry.
I have a LOAD of other things I did to get out of this sleeping-my-life away rut I was in. Most of them a lot more fun than this. PM me if you want and I'll share some.
I really feel for you. It can pass. Mine did. But I had to dedicate about 9 months to getting better.