Pick three distances (3, 6 and 9 paces) and putt to each one counting quietly 'one' on the backswing and 'two' at impact, always at the same beat. The only thing that changes between distances is the length of the backswing, never the speed of the count. Three balls to each distance; if the beat speeds up on the long ones, restart the round.
Set a constant rhythm and regulate distance with backswing length only
Pick three distances (3, 6 and 9 paces) and putt to each one counting quietly 'one' on the backswing and 'two' at impact, always at the same beat. The only thing that changes between distances is the length of the backswing, never the speed of the count. Three balls to each distance; if the beat speeds up on the long ones, restart the round.
About 15 minutes per session, 18 reps.