So sorry to hear about your friend.
I suggest you start immediately giving him cold pressed organic flaxseed oil thoroughly mixed in/with low fat cottage cheese,(2 tbs and 1/4 to 1/2 cup of cottage cheese)in the morning and in the afternoon. Then look for info by Cliff Beckwith who promotes the Dr.Johanna Budwig protocol, the person who has had astounding results with her dietary steps to help cancer patients.
Cliff Beckwith has several testimonials on this website but he also has his own website as well as on the FlaxSeedOil2 group at Yahoo.