Some toddlers and older children really like their milk and insist on drinking a lot more than that. If the child is receiving a healthy, well balanced diet and wants additional milk, it's OK. However, if he/she is eating poorly, you need to reduce his milk intake because milk is rich in calories, so the more he drinks the less his body is going to want to eat. A good rule of thumb is to only serve it at meals or snacks, so don't allow your child to wander around with his/her milk bottle. If he/she drinks milk he has to sit at the table. If he/she wants to wander around with a sippy cup, than it has to be water.