that drink is great for post workout, but that is not the problem. you need to eat some complex carbs with those meals or the body will use the protein for energy vs for muscle building. you should be eating at least 50 grams of complex carbs like oats, beans, lentils, whole wheat pasta, whole wheat breads etc with each meal..you essential fatty acid intake is low also. you need to eat some natural peanut butter, or some flax seed , hemp or olive oils.