(a) Commencement of 30-day Period. Except as provided in subsection (c), before filing a motion to convert or dismiss a chapter 11 case pursuant to 11 U.S.C. section 1112(b), the movant shall contact the courtroom deputy for the assigned judge to request a hearing. The 30-day period under 11 U.S.C. section 1112(b)(3) will not begin to run until the movant has served notice of the hearing.