Kerry,
When I finished my radiation treatments at labor day the doctors predicted that I would be fine by January. That proved not to be the case. Following a short case of depression I did begin taking a two mile walk every day and running a few errands or stopping by the office and those little things really helped a lot. However I had no interest in going to the park and putting golf balls, seeing movies, or doing much more than staying home, napping, and reading.
Everyone reacts differently to this stuff. I for one, would not judge anyone who has gone through this life-changing experience. I was slow to recover, but in time I was fortunate to recover better than most. Your husband probably has not realized yet that there is hope, and that life will likely improve dramatically. I would counsel patience.
Best of luck,
Danny G.