T.O.
T.,
It's nice of you to think of your husband, but I'd say let him figure it out on his own.
Your being away is a good time for father/son to find out some things about each other. Mom's always manage and being one I can say that we tend to over manage.
Let them figure out food. If your hubby asks for ideas, great. If not, don't worry. Your son won't starve, your hubby will feed him and if he doesn't eat veggies for a few days he will be just fine.