Thanks for all the nice comments and tips. I will for sure try the calling number option as many suggested. I actually think it will defuse the entire situation if they get 10 mins on the phone with her.
I'll take this onboard and try remember that they are doing it because they feel secure and nurture it as someone suggested.
Re another question, why one week off and one week on... well originally we two days of the working week each and a Friday (if it wasn't our weekend) so an example week for me would be
Monday, Thursday, Saturday, Sunday.
The following week
Monday, Thursday, Friday.
Repeat
During lockdown #1 she wanted to swap to alternate weeks to minimise the exchanges. I went along with this.
She then wanted to change it so she had a long weekend (Friday to Sunday) which meant I'd then have them for 5 days consecutively as I'd also have them as above but including a Friday
Monday, Thursday, Friday, Saturday, Sunday was my weekend week but also the following Monday.
Make sense? Stay with me here... it confuses me too. But this was the issue the kids raised.
So she sent me her new idea she's had with my son, which she's run past him... it now means me taking alternate Wednesdays. unfortunately I can't do Wednesdays but of course she didn't ask before coming up with and showing my son the new plan.
To be honest, regardless of the Wednesday, I don't think it's a good routine for the kids as there's too much swapping and changing. The ew one is as follows
Me:
Week 1
Monday and Thursday
Week 2
Tuesday, Wednesday, Friday, Saturday, Sunday
Week 3
Monday and Thursday
Week 4
Tuesday, Wednesday, Friday, Saturday, Sunday
And So on.
If I was a kid I wouldn't know it would be confusing as hell.
When we separated we had a documented plan that's part of our separation agreement that was
Me:
Monday's and Thursdays Saturday Sunday. The same the following week but I got the Friday rather than the weekend.
So we both got two days and a weekend swapping the Fridays.
I don't know why it's so bloody complicated and I'm sure switching to a 4th rota is not great for the kids. But she's adamant for a long weekend.