Another exercise you can do with a gun with only snap caps (not loaded with real ammunition) is to work on your trigger control.
Take a nickle or quarter and balance it on the barrel, supporting the front edge of the coin with the flat portion of the front sight. Slowly aim, grip properly and release the trigger/sear into a snap cap that will support the firing pin/striker.
You should eventually be able to relese the trigger without disturbing the balanced coin.
There is a well known pattern to various problems with hold control, trigger control and follow through.
You'll see a variety of
"Diagnostic Targets" when you search on Google.
They can be helpful if there is a pattern to your off target shots.
In answer to your question, you cannot stop recoil motion. What you do is use a correct grip and stance to focus the recoil into the mass of your body. Your body mass will absorb the recoil and minimize motion following the shot.
This is called follow through, and is dependent upon proper hold control and body position. The recoil force should not disturb your grip in any way. Your wrist angle and arm position should channel the force down the bones of your arm and into the mass of your upper body.
I teach the NRA rifle and pistol courses, and know that a coach with experience observing shooting can help you quite a bit by giving you feedback as you shoot. The best way to improve shooting accuracy is to identify and concentrate on one correction at a time. Once that has improved, you move to the next observed issue.
Finally, another technique I like is called the "ballistic pencil". You prepare an index card with a round target dot. You size the target dot to be the width of the front sight when you stand with the barrel about six inches away from the target dot. Place a sharpened No. 2 pencil down the 9mm barrel, putting the erase into contact with the breech face. With the muzzle about six inches from the target dot, you fire, making the pencil shoot out of the front of the barrel and the pencil lead leaving a dot on the paper below the target dot. Your objective is to make those dots converge as closely as possible. i put shrink wrap around the metal eraser mount to protect the barrel rifling.
Marc