C.O.
My kids are 2.5 and 6 years old. Since they started drinking regular beverages it has always been milk for 2-3 meals and only 1 meal with juice. The rest of the day if they are thirsty it is water. They both keep water cups in the kitchen and help themselves to water whenever they are thirsty. Sometimes they just have milk for all 3 meals and water in-between meals. Occasionally hot chocolate for a treat or fruit smoothies for a snack.