To prevent this, it is sufficient to make a forward press on the shaft; in this way, the angle of attack will be more vertical and the face of the putter will hit the ball on the equator and not below. The launch angle will be canceled or reduced.
However, this fact, which looks like a difficulty, becomes an advantage because the putter can have the function of a chipper or replace the use of rescue when you are in the taller grass with short fringe and the hole very near.
Spending 30 minutes of training, all will be easy.