Contain, do not dive in. Close the space fast, get side-on and low, show him one way, and delay him without committing.
A defender contains a 1v1 attacker, jockeying and delaying without diving in. Emphasise a fast controlled approach, a side-on stance, showing the attacker one way, and patience. Rotate the roles.
Fork it into your private drills, then change the animation, adjust positions, swap equipment, or drop it into a session block.