Losing a lot of distance lately?
More than likely you’re losing your posture somewhere during the backswing. You could be straightening up in your knees or standing up in your waist. Either way, losing your posture will translate into losing power.
If you feel like you’re losing your posture, try to have the sensation of slightly bowing to your right knee as your body is turning during the entire length of your backswing. The proper sensation will have you feel like your belly button is going to make a slight motion to the top part of your right knee.
Try this drill before you hit balls on the range to get a better feel for this power move. First, put your hands on your hips (1st photo), and then simply bend from the waist to your right knee. (2nd photo). This drill will help you get the feeling of maintaining the proper powerful position that is required to add more distance to your shots.