Anne, I know three months feels like a long time(it does to me too) but I think given the intensity of the treatments it's not.
I find myself getting excited over all the small steps that my husband is making. I dance a jig when he gains a pound, or can eat a little more than the day before!!!

As a therapist,I can't help but wonder if a part of the fatigue is also due to the anti depressants not doing their job right. Depression can knock you on your butt energy wise. Have you had him evaluated recently by the MD prescribing his anti depressants? In addition to time to heal,he might need some medication management(or is he open to any kind of counseling?).