Some of the guys in the Japanese POW camps my grandfather was in apparently died like that. I think quite a few of them struggled onward driven by the desire to taste freedom again before they died but it coincided with being able to eat “normally” for the first time in years. Granddad was around 84 pounds at liberation.
God love your grandfather.
this is not about your grandfathers situation...I went on a 7 day fast with only water. The strange thing was that after 3 days I had no appetite and it was easy not to eat....when I started off the fast, the strange thing was I could only tolerate clear soup for several and gradually got my appetite back.. gg