N.J. Ct. R. 3:21-10

(a) Time. Except as provided in paragraph (b) hereof, a motion to reduce or change a sentence shall be filed not later than 60 days after the date of the judgment of conviction. The court may reduce or change a sentence, either on motion or on its own initiative, by order entered within 75 days from the date of the judgment of conviction and not thereafter.

(b) Exceptions. A motion may be filed and an order may be entered at any time (1) changing a custodial sentence to permit entry of the defendant into a custodial or non-custodial treatment or rehabilitation program for drug or alcohol abuse, or (2) amending a custodial sentence to permit the release of a defendant because of illness or infirmity of the defendant, or (3) changing a sentence for good cause shown upon the joint application of the defendant and prosecuting attorney, or (4) changing a sentence as authorized by the Code of Criminal Justice, or (5) correcting a sentence not authorized by law including the Code of Criminal Justice, or (6) changing a custodial sentence to permit entry into the Intensive Supervision Program, or (7) changing or reducing a sentence when a prior conviction has been reversed on appeal or vacated by collateral attack.

(c) Procedure. A motion filed pursuant to paragraph (b) hereof shall be accompanied by supporting affidavits and such other documents and papers as set forth the basis for the relief sought. A hearing need not be conducted on a motion filed under paragraph (b) hereof unless the court, after review of the material submitted with the motion papers, concludes that a hearing is required in the interest of justice. All changes of sentence shall be made in open court upon notice to the defendant and the prosecutor. An appropriate order setting forth the revised sentence and specifying the change made and the reasons therefor shall be entered on the record. On any motion filed pursuant to this rule, upon a showing of good cause, the court may assign the Office of the Public Defender to represent the defendant.

(d) Consideration During Appeal. Notwithstanding R. 2:9-1(a), the trial court may reconsider a sentence pursuant to this Rule during the pendency of an appeal upon notice to the Appellate Division.

(e) Intensive Supervision. Motions for change of custodial sentence and entry into the Intensive Supervision Program, as provided for in paragraph (b) of this rule, shall be addressed entirely to the sound discretion of the two-judge panel assigned to hear them. Because of the nature of the program, there shall be no administrative or judicial review at the several levels of eligibility established under the program. No further appellate review of the panel's substantive decision shall be afforded. The two-judge panel shall have the authority to resentence offenders, in accordance with applicable statutes, in the event they fail to perform satisfactorily following entry into the program.