iam using packet milk to my baby. he drinks too much at night. why? he drink approx 700ml at night. is it ok? my baby age 17months

A. give a proper dinner before further for this query you can clear properly by consulting your nearby doctor to get relevant information and get all your doubts cleared which will be a better approach for this in a proper way it becomes difficult to explain here in details without proper examination and knowing only partial history.