only he takes milk nothing else

A. Restrict the milk to about 500 ML in a day don’t give more than that try to give more proper food to the child if your child is not eating then wait for a while as the child will be hungry the child will eat what you are offering if you do not replace with milk immediately also also check if your child is teeth and that can be one reason then that case you should give more of liquid other than milk to the child