Rotation is key. I have found my best use for old beans is to make big batches of refried beans. They store in the freezer for months, or fridge until gone (they are super good). You can find plenty of recipes online or I can shoot you mine if you want. Speaking of I need to sort a bunch of my old beans from the chaff and use them. Just had them bagged in a box in the pantry and never cleaned them, probably 5 years old and not air tight storage.
It's definitely a good time for rotation. Great idea on the refried beans. Would def love some more recipes. You'll have to let me know how the bean rotation goes:-)