From the point of 10 days before my surgery and even now 10 days after, my dietician gave a 4 cup/day guideline of milk allowance. I use an excellent, pre-mix Protein drink called EAS - Carb control. I get it at Sams Club by the case for around $30. 17 grams of Carbs and less than 1 sugar.
Good luck to you next week!!