Yes, we have this too.
STBXH tried to have DD with him overnight during school days, but it didn't sit well with me and is disruptive to her. It doesn't work with his lack of respect for boundaries like bed time, either, or his fly-by-night lack of planning and routine. So he visits her one night a week, which he's changed many times and gets grief from her, so I don' say anything.
I was petrified of not seeing her for that length of time, but find I am getting used to it. I make up little errands to do or go shopping for someone's present early. I make whatever I want for meals and take it easy on chores. I chat on the phone longer and have looked up old friends and have gone back to some very old hobbies.
I found a place to volunteer, also and am looking for some online things like pen pal programs, for I love writing and mail.
Also, a plus is that it gets him out of here for longer spells than every week visits did and I can create more consistency for DD in that time than just a few days and then it's all broken.
He doesn't keep the routines for her with time, either, so she has enough time to catch up on sleep, hygiene and behavior patterns also.
FWIW, they have a nightly phone call that helps put her at ease. Part of her difficulty was that he went into hiding when he first abandoned us, so she can think he is "ok" physically and know when she last heard from him.
As his life goes longer without responsibility, his lack of caring about detail and rules is showing, and this is what I think when she's gone and that I miss her. She also sees through him a little with this length of time. He is glittery now, always buying treats and taking her to events, but always being fun or "on" gets tiring.
The main reason it was hard for me was because he bullied to change it and his reasons were terribly selfish, and largely, because it was more change. Then he changed it again.
So I work to be very quiet about my reactions now to what he does and log things to show my lawyer. He is not timely-that's a boundary!-so I log this, too.
I wish you well.
P.S. At least in this case, L said that it won't bother the CS payments, for I worried about that, too.