He probably will not be able to find a lawyer that will do this. But you need to contact an Elder Care Attorney to protect yourself. By the way if your Husband is a Veteran you might want to contact the Veterans Commission Assistance office to see if he qualifies for any help from the VA
The answer differs by state. I think in Florida, generally no. A marriage or a divorce is partially a contract, and one party may not be able to enter into a contract
I would consult an actual attorney on this. Too much to risk to go by a "crowd-sourced" answer. Attorneys know way more "tricks of the trade" that may help you. Good luck!
But you need to contact an Elder Care Attorney to protect yourself.
By the way if your Husband is a Veteran you might want to contact the Veterans Commission Assistance office to see if he qualifies for any help from the VA