They should cease all medical care for themselves along with auto and med insurance, then they can demonstrate their reliance on Jehovah, prayer, holy spirit.
C.O.s should live in these final days as if they had no wife, more fully dedicated to the ministry. That way, congregations don't pay for her expenses. She can work full time and minister full time if she has the energy left. That will help her to live like they expect others to live.