Of all the things you can do to shoot yourself in the foot during a divorce, this one tops the list. Talking to your Ex about legal issues or personal things that they don’t need to know about. It will cost you money, frustrate your attorney, and set you up for disappointment. And who wants that?
It happens more than you think. You hire an attorney, but between all of the child exchanges and communications with your Ex, you get tired and forget that there is a line between co-parenting and litigation that shouldn’t be crossed. The next thing you know, something you’ve said in a moment of (frustration/irritation/exasperation) has tipped your hand in favor of your Ex, and his/her attorney will use that to prove that your Ex’s behavior has been corrected (at least temporarily right before the hearing) or to use against you. Either way, you have just given away your best chance of getting the modification you have spent so much time working towards.
Talk to your Ex about the kid’s homework, about soccer practice, about rehearsals, but don’t talk to them about anything beyond parenting. Handling legal matters is your attorney’s job. Let your attorney do what you hired them to do without making them jump through more hoops because you opened your mouth about a recent purchase, the party you attended or the lavish trip you took, or whatever. Sometimes the best way to help your attorney help you, is to remain silent.