cottage cheese is typically high in casein, not whey protein. You can buy casein protein powder just like whey, but it is not as easy to mix. My preferred casein alternative is greek yogurt. Oikos makes a high protein one that has 15g of protein. In this study you can see the effects of both whey and casein protein intake -> https://sci-hub.tw/10.1159/000012817. Protip: Eat your greek yogurt or cottage cheese just before bed as it takes upwards of 8 hours for your system to digest casein (2 for whey), helping provide your body with additional protein during sleep. (preserves lean muscle mass)