Rule 35. Correcting or Reducing a Sentence
(a) Correcting Clear Error. Within 14 days after sentencing, the court may correct a sentence that resulted from arithmetical, technical, or other clear error.
(b) Reducing a Sentence for Substantial Assistance.
(1) In General. Upon the government’s motion made within one year of sentencing, the court may reduce a sentence if the defendant, after sentencing, provided substantial assistance in investigating or prosecuting another person.
(2) Later Motion. Upon the government’s motion made more than one year after sentencing, the court may reduce a sentence if the defendant’s substantial assistance involved:
(B) information provided by the defendant to the government within one year of sentencing, but which did not become useful to the government until more than one year after sentencing; or
(3) Evaluating Substantial Assistance. In evaluating whether the defendant has provided substantial assistance, the court may consider the defendant’s presentence assistance.