If you are practicing and start hitting bad shots then step away from the ball and work on re-establishing solid contact with a few bump shots in order to get the feel for center clubface hits
A two plane swing requires you to start your downswing with a hip bump forward and then arms pulling down, which relies a lot on having good timing
Your legs play four different roles in your swing from address to finish as they provide balance throughout the swing, so the motion of the legs is critical to allowing you to progress through the swing correctly