One packet of mix contains basically 4C blocks, 2 F blocks and a negligible amount of protein (http://www.yoplait.com/products_nut...Smoothie).
The milk contains 1P and 1C, and it's missing F. Assuming the protein powder is Zone protein powder, or a similar one, it contains 2P and is missing F.
This gives you a total of 3P (all fat free), 5C (1.5P, 2.5C per shake). It requires adding at least 3P and 7F to the whole before splitting it. If the 3P you add is also fat free, you'd need to add at least 10 F instead of the 7F I mentioned. You wouldn't need to be that concerned with the missing C, but if you prefer to, you can add up to 1 block more C to the recipe before splitting it.