In Canada i believe the recommended milk intake is 2 cups, which is 16 ounces. My LOs have 9 oz sippy cups so I just fill them twice, therefore the 18 oz. There's often an ounce or so left in the cup, so they are getting the required 16 oz.
If I gave my son a cup with a straw, that cup would go flying!!! He's a wild one...
Thanks for the feedback creations. I will work on getting him to drink a cup at lunch, and then gradually wean BF and introduce more milk during those times