Store Cottage Cheese Upside Down

It's hard for me to find the low fat cottage cheese in small containers, so I end up buying the larger containers. Since I'm single and the only one who eats it, it can go sour long before I can eat it all. I have found that storing it in the refrigerator upside down makes it last well past the expiration date. I turn it upside down on a small plate. When I turn it right side up to open it, I just give it a little stir and it tastes as fresh as the day I bought it.