Filed 4 divorce 4 yrs ago, still in court waiting for ruling from the judge. Havent lived 2gether for 7yrs and dont plan to reconcile. Can I file separated/head of HH?

We both live and maintain separate apartments and split roughly 50/50 time with 2 children.  I have paid over 1600 per month or more since we first separated in child support sincey ex didn't work for a long time and even now barely makes any money, while I have been an engineer making decent money.  Just looking to catch as many breaks as I can right now as I just recently lost my job.