Man, he sure is a real jerk when it comes to showing up!
Geez, IDK what to tell you. I wish I knew the "secret" code/words to wake them up with.
Maybe, just tell the kids nothing and be "internally flexible" with your time on the weekend. So if he shows up, great, if not, no one gets their hopes dashed. Of course, I'm only talking short run here. In the long run the court will make a schedule and the less he shows up, the more he pays (as you will document the no shows) and you'll have a record of it he cannot refute.)
This might just be the hardest part of all this, Life...and it will pass.
For you, the clarity is growing. Things will get better for you.
Hang in there, and protect those children.
(( ))
M: 57 H: 60 M: 35 yrs S30,D28,D19 H off to Alaska 2006 Recon 7/07- 8/08 *2016* X = "ALASKA 2.0" GROUND HOG DAY I File D 10/16 OW DIV 2/26/2018 X marries OW 5/2016