More questions: What has the sharing percentage turned out to be? Official over nights as well as actual time shared? And I'm going to throw something radical out there -- what if Wednesday becomes H's day? Would that create an imbalance or a disruption for S? Could you trade those two hours for a different two hours during the week? Just trying to think outside the box. What you are doing is not working. And you can either lay down the law to enforce what you have, or you can change what you have. Neither one is right or wrong. Explore some options, here.