Hi, Im not sure if I can help but here are some suggestions that I know help in our house. My mums positions is similar to your husbands, well a little more fargone, but we have adjusted some things. I have to say our country seems to be much better than yours in healthcare, we are getting an extension built and are being given 24k from the local council towards it, and they give us a lot of equipment, due to the nature of the illness. Also we have the motor neuron disease association, I dont know if you have anything similar, they loan you equipment, wheelchair, stairlift, alarms etc.
Anyway some steps we use, again we only have the chairlift for the first 10 steps and takes two people to lift her feet up and help her get up the others. We have an electric pillow lifter, with handheld remote that sits you upstraight in bed. Downstairs we have put a comode (like a childs potty) in our closet, painted it and put a light in to do a make shift downstairs toilet, it does smell a bit as no window, but scented candles and bleach are great! I got a little trolly on wheels, only a cheap thing, that I wheel her meals in on, and she can lean on and its easier than a tray. If you get knives and forks with fat handles I call it, they are easier for her to hold. I have a little alarm, she presses it if she needs anything, this has been a godsend, especially in the night.
The above are not expensive items, and if anybody offers to help you out, friends family etc, I would just say if you are in the shops and see such a thing would you pick it up for me, I think it could help. You will be surprised. I was looking for mittens instead of gloves with fingers as I couldnt find any anywhere, Now I have 3 pairs for her!
Hope some of this helps!