Uh, have you considered looking for work that supports the family since you already do anyway? Something that if his SSI gets cut you all are fine? If he's doing a good job staying home with the kids and taking care of the house, maybe that's his job now?

Some people with the disorder can't work a regular job. Maybe you both need to see a family therapist to figure out what kind of roles you both are able to perform in the family.