Do you need to be open 12 hours? I would aim to get down to 9-10 hours in the next year, if you plan to do this long term. Do your clients need you to be open 12 hours a day, or do they use longer hours because it is available? Crock pots & freezer meals are great for having dinner ready after work. Mass cooking and prepping on weekends helps to make the week run smoother.

What ages do you have in care? It is pretty common that all have an afternoon nap, or quiet time in the early afternoon. This would give you time to get morning dishes, and other odds & ends done.

If they are hungry they will eat. Provide healthy nutritional and balanced food options throughout the day. It is up to them how much or if they will eat. They might be holding off on eating, if they think you will start making additional options.

Activities: variety of blocks, dramatic play items, reading time, action songs, finger plays, dancing, outdoor time, musical instruments, puzzles, transportation toys etc. Maybe reserve art time for when the infants are sleeping.