I think it's wise to work with someone rather than against them but you cannot constantly be held up at gun point. Sounds like you may have about 7 more years of threatened litigation unfortunately.
You might as well get use to her demanding a schedule she wants or threatening you with court. The reality is you need to be firm and do what is right for your children.
Going to court does not appear to have been that bad for you. The court gave you custody because the court believed you were the better parent. Why would the court even think about changing that unless you agreed to it?
In order to change a custody schedule after a judgment requires her to prove to the court that there has been a substantial change in the children’s lives since the judgment that would require a change. Does not sound like there has been any change.
Do the right thing for your children. If in doubt talk to a counselor and get their opinion on how your children are doing. Nobody said being a single parent was an easy job but the court believed you could handle it or you would not have been awarded primary custody.
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