In this drill, it is important to feel the weight transfer from the front of the leg, thigh to the rear hip (butt) on the back leg. This is what we are looking for. The results of the ball being hit don’t matter.
From a balanced position on the back foot with the front foot off of the ground, ‘sit’ into the back hip. Feel the pressure move from your thigh holding you balanced to your rear hip holding you in place. In a controlled motion, stride forward and land with your feet as wide as the length of your bat. If you want to hit a ball off of the tee at this point go ahead and do so, but land and feel yourself in a balanced position before taking that swing. This drill is to feel the back hip load and be controlled in your stride. We are not working on the swing.

Advanced tips: point your rear toe-in slightly. It should be just inside of your back heel. This will make clearing your rear hip easier and faster… Land on the ball of your front foot. It should land slightly opened to help you clear and turn your hips at launch.