It all sounds good Crikey, and to your lovely sister I was just going to mention Cotton Traders, plus there are also adverts in the Caravan Club magazine (we caravanners are all old fogies into things like cords and thermal lined elasticated-waist trousers) and also in the Guardian. Not sure how you get access to those, presumably online. But places like Millets are also good (have they quite gone bust just yet?), and even George at Asda if you have a local store.
I wonder if giving him his own plastic lidded tub in the bathroom or wherever to put any possibly soiled or wet clothes would be better for him than having to put them in with the family washing?
Make sure there is lots of loo paper in the loo, spare rolls, and maybe one in his bedroom, and a roll of kitchen paper downstairs in case "it" happens there. It doesn't sound to me that it will, but if he feels reassured that there is the equipment there, it will feel good to him.
Back to your mum, though. Eh dear. Poor lady. My dad had no dementia, he had stomach cancer. He couldn't eat. His eating tract was full of "Bleughy" stuff, most unpleasant, and mum simply couldn't understand it. She was never the brightest of the bunch of bananas, but his cancer was beyond her comprehension. She didn't appreciate that he might be sick after chemo, or nodding off in the afternoon, or a bit confused cos he was so tired. She was on at him all the time. EAT THIS. WHY CAN'T YOU EAT IT, IT'S ONLY SCRAMBLED EGG. YOU AREN'T TRYING. DRINK YOUR TEA. DRINK IT UP COS I NEED TO WASH THE CUP. It was her routine to provide a cup of tea, and ten minutes later wash the cup. She couldn't cope with dad taking 20 minutes or longer. IT WILL BE COLD, YOU CAN'T DRINK IT COLD she would shout, until he was sick and fed up of her. Bless her, it was just her way. She didn't understand. So maybe that's how it is for your mum. My mum didn't disown my dad in the way that yours has, but she wasn't as gutsy, but she certainly complained about him to me - he won't do this, he won't do that, and when I told her it was because he COULDN'T do it, she genuinely did not understand. It was beyond her comprehension that a person couldn't enjoy a cup of tea. My dad only drank the tea cos he knew he would be dehydrated if he didn't. And he was intelligent enough to ask for a glass of water. Well, mum didn't do glasses of water, so it was more tea.
Mum got angrier and angrier with him, simply because she didn't understand. Fortunately dad recognised that and was able to cope with it, thought actually perhaps he didn't.
Anyway, it's not about me. You are doing a sterling job, and it sound like the right thing. If you can get care at home in place (where do you live? Nothing like that would be available near me), you are on a winner for the time being.
Love
Margaret