Oh lucky I do feel for you both having such a frustrating and painful time. Not nearly as difficult as your situation but when caring for my MIL I learnt to use the carers’ visits as my “time off”. There were eventually four visits a day, the longest being the shower and morning dressing so I used to go out for a walk, pick up items from the corner shop. That half hour set me up for the day, having had half an ear open at night. The other visits were shorter, but I could have a quick shower, a quiet coffee and 10 minute crossword and/make a phone call. After MIL was in bed I would watch a recorded tv programme of my own choice and phone my DH ..... so the carers helped MIL but as long as they turned up I got my four little breaks, so they helped us both. Because she ate well, so did I. This is more difficult for you I know but do try to make quick easy meals eggs, or a piece of fish to keep you going. I wish you strength for the difficulties you are facing.