This is called a food jag and typically occurs among toddlers. As long as the preferred food is nutritious and the jag does not last long, there is nothing to worry about. It will take children anywhere from a few weeks to a few months to learn to feed themselves. Children's appetites may suddenly decrease around the age of two due to a decrease in their growth rate. As growth slows down, energy requirements are also reduced.
Children involved in meal preparation are more enthusiastic about eating and trying new foods.
Try pouring it a short time before serving to take off the chill. Serve milk in plastic cups with covers that fit or unbreakable cups with weighted bottoms. Even though a straw makes it easier for a child to drink milk, you may want to encourage a child to drink directly from a glass. Drinking from a glass can help to develop eye-hand coordination. Only offer flavored milk on special occasions.