When re-learning how much effort it takes to roll a ball on the putting green try this:
Pace off 20 feet from the fringe of the green, drop 5 golf balls down and try to hit each putt exactly 20 feet or as close to the fringe as possible. Take the hole out of the equation and putt to the fringe. You should be able to repeat this feel with success after a few series of 5 putts. Don’t rush, relax and re-learn!