Separated parents often require professional assistance to create a safe and respectful environment to negotiate parenting arrangements.  You may have made attempts to discuss parenting arrangements by calling your coparent on the phone or trying to discuss increased time at changeover. These are not the right forums to attempt negotiation as quite often can lead to conflict, as your coparent may feel pressured, harassed or intimated by perceived demands.  Sometimes, there can be resistance...

Are you always the coparent trying to model good coparenting in the hope your ex changes? Each time they request a swap of parenting...

So, like the chicken or the egg, determine which came first! Domestic violence creates the requirement to keep you and the children safe...