Hmmmm I probably would turn my 'worrier' on, and like JLB mentioned- become like a hawk. It is VERY rare that my cats don't eat. So, I would try to entice them with wet food, maybe a few treats (but not too many, cause they spoil the appetite), and most importantly...make sure fluids are going in.

One thing I have noticed...when I am down to the last bit of dry food...my guys kinda eat less. I am convinced that it is stale, though I keep it in a 'air-tight' container. So, is it stale? I can't see that your being home would be stressful...not like you being away all the time would be...Good Luck, and let us know.