DCS,
I kept the PEG until I was sure that I could get enough nutrition without it. In my case, like that of Brian Hill's, I needed it a long time and kept it for 10 months. Obviously most people can get rid of the PEG earlier, but there is no reason not to use it to supplement your diet if you still need to gain weight unless and until you are able to get sufficient nutrition from eating.

Good luck,
Danny G.