Prehaps i shoud make him do the following
do the shop - actually see the pricings of things -
the cooking - so he can see how much food it takes -
the cleaning - see how much product gets used -
kids snacks - see how much they actually eat -
Leos food - see how much he likes to eat -
keep track of how much he eats - see how much it really is -
entertain/feed guests that pop in out of no where - see how much it actually throws out snacky foods and extra impact on the meal foods.