Feeling the weight of the cue, propelling mass. The swing arm controls the weight pulling it forward.
It doesn't hurt to feel the weight when analyzing a shot, the cue speed, and stroke, it's all one dance.
Shortening or lengthening the grip is common.
I air stroke hip to hip with my arms down, others take out ceiling tiles.
I may be 3 inches from the object ball and want to float forward 3 inches, or I have baby nip shot, a bunt.
I shorten my grip slightly, it's not major movement.
I'm air stroking short smooth movements, feeling the weight of the cue and stroke prior the shot.
If I have to move the cue ball a good distance I will slide back on the grip and take longer and slower
air strokes. Moving the hand to different grip positions is very suttle but you feel the weight shift.
You're not holding it close to the joint or off the butt cap. Most of the time it's not noticeable to anyone but you.
Short Stroke, Mid Stroke, and Long Stroke technique are best achieved with the proper grip for each.
Air stroking and feeling the shot is part of the flow for a smooth rhythm.
Baseball players, golfers are feeling the stroke, the weight of their tools.
The Cue Ball is the name of the game.