It is also common for children to eat all one food on the plate before they begin to eat another food. They want to eat only one or two foods for days on end. Try not to make an issue of this normal, frustrating behavior. Wait a few days and they probably will be eating a variety of foods again. Set a good example.
Children are great imitators.
They watch what we do. If we refuse some foods, they also will be more picky about what they want to eat.