Whole milk

How much and how often is your 13m old drinking whole milk? I know my son is drinking way too much and trying to find ways to cut back.. he drinks anywhere from 24-36 oz per day.. we just switched from breast milk to whole milk two weeks ago. He also eats 3 full meals a day and has snacks between. He will drink water which I have noticed has cut back his milk intake a little throughout the day.