Little ones can set the table, call everyone to the table, wash and tear lettuce leaves, time the cooking with an egg timer. For every food, there is almost always a substitute. Don't ignore problems that interfere with eating, such as teething, sore throat, blocked nose, upset tummy. Keep offering new foods even if kids reject them at first. They need to see them several times before they look 'familiar'.
Fussy eaters are often slow eaters who dawdle over their plate.
It is pointless trying to hurry them.