Sorry to hear he's getting worse...

I've had both the stomach tube and the one up the nose, the stomach one you have a small op to get it in & it can be a bit of a pain as it is always in the way especially while you try to sleep..
The nose one can be put in while you lay in bed without being put under & is over in about 5 minutes this to can get in the way also but IMO is far better then the other....The food they give you is a thick liquid that takes about 8 hours to pump in to you stomach which I did while gaming but you can do it over night...
Please ignore me if the doctors have already explained all this to you....
Good Luck