Severe fatigue

Hi all.
My Mom was diagnosed mid June with this terrible cancer. We have been seeing a local dr., but recently went to the Block Center in Chicago, IL. Our local dr. has basically given up on her, but WILL go along with the Block Center’s treatment. So we still have, Dr. Death, as our local medical. It has been tough at times, since he is a reg. cancer dr. They tend to give up easily if reg. meds do not work. Anyways, my Mom is severely fatigued, bed ridden the last 2 days especially. I was wondering if this is normal. I know chemo does a lot to the body, but we can’t get chemo some times becausewe are TOO fatigued! I am really having a hard time tonight. Seeing my Mom not able to get out of bed just killed me today. I would love any great stories of loved ones who went thru the same & are better today. We have just started doing the Cancer diet from Block & hope we are NOT too late. Love any imput please!!!!!!