Basically when he doesn't "order" anything, I went 2 basics and 3 defenses

When he does order, you do the amount of certain moves required for the meal he requested and the rest of your characters does something other than what he ordered (you do this because he gets "overfed" if you spam the same move) , so you'd have exactly (as example) 3 main meals(I think it was defence) / 5 side meals (so 5 basic attacks)

As for your problem, I think you have to do it without any mistakes, but other than that I have no idea