Keep jumping back and forth until your interval is over.
Next: bring that right knee back to 90 degrees in front of you as you continue to balance on that left leg.
Starting with your right foot, step forward into a lunge with your heel landing flat on the floor and your knee tracking over your toes.
Slightly bend your left knee then, with control, hinge at the hips to let your torso come forward your arms will naturally move down towards your shins as you do this.
Bend your left knee to sit into a mini-squat then straighten the left leg until right before your knee locks out.
Before you start hopping, make sure your front knee is tracking over your toes and your right knee is on the floor.