Ah my love-it's sometimes freaky how similar our two dear husbands are. Mine is trying a similar line currently. He has been haranguing me to change our contact schedule to one that more closely matches that his girlfriend has with her own kids, so that they can spend more time together. (Although he at first tried to dress it up as being 'better for the kids' but eventually had to admit that actually it would benefit them in no way at all) Neither I nor my girls were particularly keen to change as what we had works well for us. However we have now agreed on a compromise-sort of half what he wanted and half what we have now. Trying to work out when to start it has been traumatic. He has lots of dates for stuff he has booked to do over the summer which match neither Schedule, ( he fails to see why I would question his priorities given that he had booked to go away over several dates he should have had the girls), and I have some stuff that was booked around the old schedule. The tantrums he has had because he wants to start it NOW and then swap weekends to accommodate his plans (to the extent that there would be no point in having any kind of rota at all). I've eventually said we should just start in September. Que personal insults, accusations of my not being understanding about his dad dying (in January-which I actually couldn't have been more accommodating,as anyone would be, about) etc etc.
It's exhausting and it's hard to argue with someone who literally cannot conceive of the fact that he may not be entirely right.
I suspect I am about to get a request for 50/50 split too. (That's what his girlfriend has and he has actually endeavoured to arrange some childcare for the girls this week around his days after school for about the 5th time in their lives-some attempt to prove he is proactive in this regard?). So I too will be going back through my calendars and emails to find the evidence of the requests to reschedule so he can go away, the weekends he's missed through choice as he's prioritised his social life, the lack of interest or organisation of after school care on 'his' nights with them.... I don't know if it will do any good-but best to be prepared.
He's slightly got me over a barrel as he has reduced his payments to me (or will be doing soon) which has meant I've had to go back to work full time in order to have enough income (albeit im working with some flexibility which means I still get home to get the girls from school three days a week). It feels horribly like part of a plan to put me in less of a position to provide as much care as I was for the girls, which he can then site in his arguments. (Its also meant I've had to slow up on the course I was doing which was going to help me change career a bit, something else I'm pretty pissed off about given the years I supported him to qualify, which has enabled him to now earn massively-I'll still get there but it will be a longer slog).
He is angry and annoyed with me because the girls have proved reluctant to spend time with his girlfriend and him. His narrative is that I've put them up to that, which is hugely unfair and inaccurate. She is never discussed unless they come home upset because their Dad has been moody with them over it and even then I've only ever said ' well, you probably will have to spend time with her at some point-no one can force you to like anyone but you have to be polite'...which is the best I can do under the circumstances, and is more than either he or she deserve from me. His narrative to anyone that will listen is that I'm the sole thing stopping them becoming the local answer to the bloody singing Von Trapps!
It does make you feel a bit sick and a bit poleaxed going through it all again. I drove to work in tears yesterday for the first time in a long while (but not of course for the first time) because he we are two years later, no further on really and the anxiety of it is just fucking dreadful.
As pp have said a lot of it is about control and power. Our interactions are either fine and polite (when I'm agreeing to whatever it is he wants) or angry and insulting (when I'm not), and there isn't much in between.
If you can see your lawyer I would-it will help to have that opinion to consider at least.
Keep going onit. I know it's bloody hard and unfair. One foot in front of the other...