I'm no help. I'm in a rut too. It's so hard feeding so many ages and likes/dislikes.
I went from feeding 10 dcks this summer, some with very hearty appetites, down to 6 dcks, only 1 with a good appetite. Lots of relearning what to cook for the group and more food wasted.
I stick to very basic plain cooking. Most of my dcks won't touch anything that's mixed.
Casseroles, soups, etc. All ends up in the garbage.