Practice these indoor putting drills at home and save strokes on the golf course. Work on solid contact, tempo, distance control, and aim all inside your home. http://www.golfinred.com/top-4-indoor-putting-drills-home/
Concentrate on making sure your knees don’t lock up during your swing, or at least not until after impact with the ball. Specifically, the right knee can have a tendency to lock up at the top of the backswing whereas the left knee can behave similarly at impact.