Take your hands out of the stroke
Active hands can do more harm than good when you’re on the green, because they make it difficult to keep the putterface square to your putting line. Instead, when you swing back and through, keep your grip light and feel like the motion of the putter is being generated by a small turning, not rocking, of the shoulders. If the hands stay passive, this slight shoulder turn will allow the face to move on a small arc yet remain square to your putting line. Better face control means more made putts.