Cameron Allen appeals the below-Guidelines-range sentence the district court 1 im-. posed, after he pled guilty to knowingly accessing a facility of interstate commerce with the intent to view images of child *448 pornography. His counsel has moved to withdraw, and has filed a brief under Anders v. California, 886 U.S. 738, 87 S.Ct. 1396, 18 L.Ed.2d 493 (1967), challenging the- substantive reasonableness of Allen’s sentence. Allen has not filed a supplemental brief.

Upon careful review, we conclude that the 24-month prison term imposed by the district court, which represented a substantial downward variance, is not unreasonable under the totality of the circumstances. See United States v. Feemster, 572 F.3d 455, 461-62 (8th Cir. 2009) (en banc) (describing appellate review of sentencing decisions); see also United States v. Lazarski, 560 F.3d 731, 733 (8th Cir. 2009) (it is “nearly'inconceivable that the court abused its discretion in not varying downward still further”). In addition, we have independently reviewed the record in accordance with Penson v. Ohio, 488 U.S. 75, 109 S.Ct. 346, 102 L.Ed.2d 300 (1988), and have found no non-frivolous issues for appeal.

Accordingly, we affirm. As for counsel’s motion to withdraw, we conclude that allowing counsel to withdraw at this time would not be consistent with the Eighth Circuit’s 1994 Amendment to Part V of the Plan to Implement the Criminal Justice Act of 1964. We therefore deny counsel’s motion to withdraw as premature, without prejudice to counsel refiling the motion upon fulfilling the duties set forth in the Amendment.