Lunch can be quiet
Lunch can be the easiest meal of the day. Serve a food they already accept and sit for a few minutes.

Noon does not have to be a lesson
You do not have to introduce something new at noon. Save the new food for the meal that feels least rushed.
Leftovers from last night are a good lunch. Familiar food, already cooked, is a gift on a busy day.
What quiet looks like
A bowl, a chair, you nearby. No tour of the plate. No count of bites.
If they eat and get down, lunch worked. The afternoon snack can be the same kind of food.
After a hard morning
If the morning was loud, do not repair it with a challenging lunch. Give the food they trust.
The new food can return at dinner, still in a small piece, beside the same yes.
A sentence you can say
“Lunch is the rice from yesterday.”