Which 2000 DCOM involves a teenager who creates a clone of himself?

The 2000 DCOM about a teenager who creates a clone of himself is The Other Me.

The film centers on Will Browning, a high-school student struggling academically and facing the prospect of being sent to a strict summer camp. After ordering a science kit for a school project, Will accidentally creates a genetic duplicate because the kit has been contaminated with a cloning formula.

Will names the clone Twoie and initially uses him to attend school in his place. Twoie is more confident and socially capable than Will, quickly improving Will’s reputation while also forcing Will to confront his own fears and jealousy. The scientists who developed the formula pursue Twoie because he needs a stabilizing formula to survive.

The Other Me was released on September 8, 2000, and was based on Me Two, a 1991 novel by Mary C. Ryan. Andrew Lawrence plays both Will and Twoie, making the clone premise a showcase for a single young actor performing two contrasting personalities.