Crock Pot Cooking Time- 8 hours on low Equals?

I need entire cooking time to be 6 hours, It's already been on high for 2 hours, can I do 2 hours on high, then 4 hours on low? this is for Crock Pot ham and Beans, with Great Northern Beans I soaked overnight. I'd like it on low as long as possible to bring out the flavors. Thanks!