small minnow, it took me three weeks before I turned the corner and started feeling better after rad ended, so your friend may have a bit to go yet before he begins to feel better. We all react differently, though, so he might take a little less or more time. As Sheldon mentioned, nourishment is a major contributor to getting better. Encourage your friend to get as much food and water as possible. Has he tried other feeding tubes than nasal? I had one that was inserted through the skin and tissue directly over the stomach and was very easy to use. Maybe a different type of tube would work better for him. Meanwhile, my thoughts are with you both.