If you had a lawyer represent you when you entered the deferred prosecution, then have them assist you. If not, you could have the case sent up to the courtroom and ask the judge to extend the time to pay. I wouldn't recommend doing that, however, without and attorney. Regardless, if you have to represent yourself, I suggest doing as much community service as possible before asking for the time to pay. That way, it shows the prosecutor and the judge you are doing what you are supposed to do, even though you are having trouble with the financial conditions of your deferred prosecution.