just catching up with this and so pleased the regime is working GrannyIris.
My ancient spaniel became incontinent in her last year, but fortunately she always slept in her bed so I could change the bedding easily.
Our very old rescue boy discovered the joy of crates when we had a puppy, we'd leave the door open during the day for the pup but often find the old boy sleeping in there, happy to be away from the other two. It was so useful when the old dog became very ill, back legs going on him, couldn't get up again. For the final 3 weeks of his life we were able to leave him in the crate (door closed if we went out) and he was happy and safe. We never crate trained him as he arrived age 2 but I've crate trained pups and dogs since then because it's so useful if they're sick, recovering from injury etc.
Sending best to you an your dog