the rule of thumb i was told was that it takes one month of recovery to every week of radiation. it is totally normal to feel fatigued. on the days when i crash, i find the best thing to do is to sleep. have your husband listen to his body. the sleep will help in the healing process. don't let him push himself because that can lead to trouble.

he really needs to eat more. nutrition is also important for healing. is he taking anything like ensure or boost? those liquid supplements have alot of nutrients that can help the healing. a peg tube is also a really big help...i've been out of treatments for 3 months but still have mine and use it alot. i lost alot of weight and now have to gain 10 lbs before the doctor will even think of taking the tube out.