Hi & Congrats on your husband finishing treatment. Yes - this is a rough time since the radiation and chemo both continue to work after treatment.
The best thing I can tell you is to go to the top of this page, FAQ's - or the search engine - the peg has been discussed at lenght and I know there was advise for questions just like yours. There are some very good descriptions of what and how to do things that should help a lot.
Please keep us posted on his progress and I hope he starts feeling better soon.
Take care,
Dinah