When you face a shot shorter than what you can produce with a full wedge swing, you've officially entered the short game - PELZ

Chances are you struggle from these distances because you make a full backswing and then decelerate into your foward-swing to "soften" the blow and shorten the distance. Keeping a consistent follow-through and varying the length of your backswing is the best way to achieve efficient and accutate distance control.