Relate the clubface to the wrists. The ball and the clubface are connected for a brief period. Clearly, the wrists and clubface must move as one until the ball is gone. Drop some balls aside a green. Select a pitching wedge and a target of about 10-15 yards.
Tee balls up until wrist wobble has been eliminated.
Take the lead hand grip first. Extend the trailing hand downward toward the mouth of the grip handle in a split grip fashion, dropping trailing shoulder a bit, as you go to accommodate the hand lowering. The lead forearm and clubshaft should be in a straight line. A line from the trailing hand to its elbow would create a forearm triangle. Hit shots with a goal to maintain the forearm triangle from start to finish.