It's up to you if want to use 1 or 2 hides. Let the snake's actions/behaviors dictate if he is ok with it being there or not.

The first few days he was using it was likely to do exploratory action. He was figuring out the changes made to his home and readjusting to the new item you placed therein. Then he probably went back to where he was comfortable. He may also use the cool hide when you don't see him use it.