On the nesting, I am not a big fan of it. First, nesting just delays the inevitable. The kids wills end up in the new normal of going between their mom's and their dad's places eventually, so nesting is temporary. Further, most LBSs struggle with it (like you have). It just isn't sustainable. AND the worst part, is that it let's the WAS cake eat. They get to come play house in the marital home, and then go off for a week and be girls gone wild. It is no path to R if that is what your goal is.
Well, I am going back to the house. I got a second opinion and determined my first mediator was wrong about the necessity of separating, and I told W I wasn't going to do it anymore. So that's that. Now I have a bit longer before I have to split time with the kids.
Me: 43 W: 41 Together 2009, Married 2011 Sons 10 and 6, Daughter 5 Bomb 2/21/21. W moved out 10/2021