Hi Mr.,
I can't help with your actual question...I am among those who overeat and gain under stress (compulsion, cortisol, etc.).
But, I know that in the months around and after losing my folks last year, my brothers and I were in quite a fog...didn't even realize how much...despite keeping going with work, training, estate stuff. I guess what I'm saying is...you might be taking in fewer calories than you realize. You might try jotting down your intake for a week, and just seeing if you aren't eating less than you think?
And...a sudden weight loss is also worth checking out with a doc, maybe?
All around, you and Silver and family have remained in my prayers.
"The best rides are the ones where you bite off much more than you can chew, and live through it." ~ Doug Bradbury