Hi, notanurse
I lurked for a while before I jumped in, too. Sorry that you have to be here - but glad that you found us!

Radiation is rough - but the shock and dental work and PEG placement prededing it can't have been easy, either. I wonder if some of the weakness is the emotional reality setting in - he can probably get some help with that.

Also, you mentain that he is on twice-daily radiation: How many days is he scheduled for? How many grays (Gy) per session. And how many Cisplatin administrations? They may be trying for a relatively quick treatment period.

Take care and keep posting!