The preliminary hearing is usually for felonies. It is a probable cause hearing to determine if there is enough evidence to hold you over for trial. Preliminary hearings are routinely waived so the Judge does not hear some of the evidence prior to trial. Like antone, once you have heard something, the next time you hear it, it seems familiar and therefore true. I would not accelerate the process. Let time take its toll on memories, etc, Witnesses and police sometimes move, get sick or even die.