A Closed Period Award would still have the 5 month waiting period and then you'd potentially be eligible until your health had improved enough to return to work.

You are required to notify SS once you begin working, and they may have you report earnings monthly.

If you have substantial equity in your home, you could look into buying down or if your husband is old enough to qualify, perhaps a reverse mortgage? Could you rent your home for a year or two and move in with family?

WC is a nightmare as well.

Aggressive, early treatment is the best way to put CRPS in remission. If he can ketamine infusions, it's a great option. If you have access to a warm pool, swimming is highly recommended. Epsom salt baths or lotion help with swelling and Lidocaine patches help many. I responded well to hyperbaric sessions to deal with spread, but my original injury site was likely too old to improve substantially. Etc.