Document everything. Clear boundaries matter even more when your ex ignores the terms of your parenting plan, because they help prevent further conflict; if they are consistently violating the plan by missing exchanges, making decisions outside their authority, or using communication channels to harass, keep written records with dates and specifics. These records may be important if you need to seek enforcement through your attorney or the court. In the meantime, focus on what you can control: your own adherence to the plan, your tone in communications, and the stability you provide in your home, while maintaining mutual respect in your own communications to help protect your children even when the other parent does not cooperate.