Even though there might some authority for doing it, I have found most judges reluctant to do anything about custody and child support while you are still living together. I do not believe, however, that it makes a lot of sense for you to meet with her attorney when you don't have one. I don't see what good that will do for you. I suggest that you hire a local attorney now and don't wait for some unforeseen event to occur. That attorney can advise you of the local rules and what the time frames are in which things get done, as well as mediation.