You would have to bring an ex parte application for order shortening time for service of notice of motion to set aside default.
In Orange County Superior Court, most of the judges require that you file the actual ex parte application by 3:00 p.m. of the day BEFORE the ex parte hearing, in addition to giving ex parte notice.
So... I suggest that you first seek Plaintiff's stipulation to set aside default so that the prove-up hearing goes off calendar. Otherwise, I think there is no real urgency to go in ex parte. Rather, you can make a noticed motion to set set aside default AND vacate default judgment after the prove-up hearing takes place.
The information presented here is general in nature and is not intended, nor should be construed, as legal advice. This posting does not create any attorney-client relationship with the author (who is only admitted to practice law in the State of California). For specific advice about your particular situation, consult your own attorney.
Disclaimer: The materials provided below are informational and should not be relied upon as legal advice.
Unless the plaintiff would stipulate (agree) to take the judgment prove up hearing off calendar, you would need to give proper ex parte notice and bring your motion on an ex parte basis at the earliest date the court may hear such a motion. You need to immediately consult your own attorney to protect your legal rights.
The obvious choice is to go in on an ex parte motion if opposing counsel won't stipulate to move the prove up hearing or vacate the default.
File your ex parte papers (moving papers, plus a declaration that you contacted opposing counsel and notified him of your intent to appear ex parte by 10:00 a.m. the day before the hearing) with the clerk's office, remember to give opposing counsel notice by 10:00 a.m. the day before the hearing that you are going in ex parte (and serve him via email and fax with a copy of your papers) and then show up on the ex parte hearing calendar for your judge and make your argument.