Hello Yorkie,
It is a very difficult time for you but you know that you are doing the right thing for both you and your husband, and ten years of vascular dementia is a very long time to have managed, especially with your own health conditions.
Lots of people have found that their spouses quickly settle in to their new life. It is often harder for the carer than it is for the person with dementia because of your feelings of guilt.
Someone on here recently described it as a bag of guilt. Personally I have a stick labelled guilt that I hit myself with when I think too much. It has helped me to recognise these guilty feelings and mentally try to hide the stick or bag away for a while because I realise it's not helping me to keep beating myself up. Sometimes the bag takes up the whole room and there's no hiding it away, sometimes it is soon dispatched.
Please keep us updated on how things are going for you and your husband.