How much cows milk?

Baby is 12m next week, not sure where that past 12m has gone haha. We are planning on slowly transitioning him to whole milk from formula. After discussingit with his HV we are going to do part formula part whole milk in his bedtime bottle, slowly reduing the formula and adding whole milk, then doing the same with his morning bottle until he is fully off formula. His HV is happy with this transition but I forgot to ask, when he is fully off the formula is there a recommended oz for whole milk he should be having in a day?