To attempt to control something that is permanent is irrational to think this will help anyone. The disability that is not recognized or when we as helpers believe it is just an act is detrimental to those we serve. I believe that without proper training educators often find themselves with this attitude out of frustration.
As you look into the concept of structure, adjusting to meet the persons needs and to make it consistent would likely give you a satisfactory outcome. Creating a viable routine for the person you are serving appear to be best practice. in the concept of structure to remember the focus here is the person needing help.