Stop your backswing when the top of your right wrist is about three inches below your belt. Hinge your wrists slightly so that the shaft is a few degrees above parallel to the ground when you end your backswing.
Don’t try to “make” 30-plus footers. Instead imagine that the hole is in the center of a circle that’s six feet in diameter and leave your lag inside that circle. This removes the pressure to make it so you’ll putt with more feel and less tension in your hands.
Then use a normal swing back and through keeping it as level as possible. Learning to control distance on this shot will take time but a little practice will go a long way toward improving your touch. Although taking on tight lies is never easy both of these very different techniques will deliver short-game gems for you.