Learn the rhythm. Step one foot per rung with a tall posture and a steady, even beat before any speed is added.
Walk through the ladder, one foot per rung, with a tall posture and a steady rhythm. Emphasise not clipping the rungs, an even beat, and staying tall. Build the coordination first, then progress to fast feet.
Fork it into your private drills, then change the animation, adjust positions, swap equipment, or drop it into a session block.