Can try to submit an inquiry via local Congress. And you can sue USCIS for a delayed case on your own, you will get a decision within 60 days. Do youtube search to learn more about it, and to get assistance with it "Writ of Mandamus Pro Se"

Have you tried it before @DJ Rez?

@Sanite Dorleans friend did it, his case was processed and approved... you need to analyze your case, and think what to do....