Have you read "The Four Agreements"? If not, I strongly suggest that you go buy it TODAY, read it TONIGHT.
One of the agreements is "Do not make assumptions". Ask questions to get clarification.
Use the mediator to get specifics.
It sounds to me that you are unclear on the agreement made, specifically when the new parenting schedule should start. Can you ask the mediator for clarification.
You may be able to use the Sunday night as leverage to get the start date this week...
Get clarification from mediator. Clarify your wants with mediator.
"What is best for my kids is best for me" Amor Fati Link to quotes: https://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=2879712
