Hi
Very sorry about what you are going through at the moment. If it makes you feel any better, looking at what you have told me, his solicitors will tell him that as you are a parent and disabled you will be entitled to help to keep your home. I have just started to study law with a particular interest in Family law. There are people you can talk to about legalities and help with housing costs etc, though it might be difficult to have face to face meetings in the current circumstances.
Hope this helps.