When I first receive videos from online students maybe only 1 out of every 20 perform the drill one somewhat correctly. It takes several videos to adjust and have them perform it in a way that will give them the most benefit.
Keeping pressure on the shaft and wrist conditions intact is the perfect structure necessary to have more feel in the hands and for more strike and control on the ball. To do that- ride the wall...
Lag putting is crucial to being a better putter. Getting the speed correct will always give you a second putt that is close to the hole. Here's a great drill to encourage better speed control on the greens.