Just going through it and need help.

Hi my name is Joseph, I'm looking for help because for the last 2 years. If been paying a ridiculous amount for my oldest daughter child support. I have two younger kids that also depend on my financially. I've ask the Attorney General to bring down the payments due to the fact that Im making less money then before. They denied me for a year, I already lost my apartment and now I'm on the verge of losing my car. They finally brought it down after a year and three different court appearances. I paid the American Family Law Center to take care of documents and preparing me for court. But now I'm 3 months behind on the car note. Which is 400 a month, with rent coming up I have no idea what to do. If anybody can help that would be great if not then thank you anyways.