Take one step at a time. It seriously seems his current need is adequate hydration and nutrition. Yes, you can shower with a peg. I used a shower chair, still do, to conserve energy, not lose my balance. If too much weight is lost, the dr may stop treatment due to that, rescan, and have make a new mask which will interrupt treatment again, due to the facial changes, and not want to under radiate or over radiate any areas or worse. Good luck with the peg.
