Copy pasta of mine from another sub any advice is appreciated. Lawyer’s and coparent

My coparent and I are new to this, she left me for another man and while i didn’t want to be where we are at here we are. Divorce was over in 3 months with her giving me 50 50 custody in a state a county in Georgia not known for 50 50. I keep contact to a minimum and attempt to grey rock to avoid conflict. I want to state i am not perfect and I’m sure have added to issues myself. When the divorce was finalized my coparent had to start paying for things like day care for her weeks and doctor appointments on a % base. After the first set of bills i noticed an immediate shift starting with her threatening lawyers due to daycare taking up 3/4 of child support unless i paid for 3/4 of day care costs. I said no she threatened lawyers and child custody modification. My lawyer laughed saying no judge would touch a divorce agreement newly signed ( this was within two weeks). I never heard from my co parent’s lawyer, cue my oldest son 5 who goes to therapy now going to his therapists saying i beat him with pans. ( i dont even spank his bottom) Speaking to his therapist on my week ( i have a boundary of she goes to her appointments and i goto mine to once again avoid conflict as she has randomly called the cops on me before) the therapist knew my child was fibbing due to him laughing. Therapists are mandatory reporters so i let him know i would understand if he had reported it anyway and would welcome any investigation.

Another week goes by but this time she threatens lawyers again, turns out tables have turned and now my son says his mother hits him. I dint think she hits him i just think she is coaching him to say things to get full custody of both our children. Has anyone else dealt with an aggressive co parent who is all of sudden not happy with the arrangement?