Go man, go!

I went through a similar ordeal two years ago with throat cancer. I didn't go with the feed tube and I'm not sure if that made it easier or harder. Either way it is a rough road, but one well worth enduring. It does get better. After a year or so of struggling to gain weight, I now have to take care not to keep gaining beyond my target weight.

Keep us updated on your progress. One of the things that made a huge impact on my recovery was the amazing outpouring of encouragement from the wonderful bunch of folks who post here at 50+.