(Not so much on the trigger press). This is what dry firing is all about developing a smooth consistent trigger pull. If you cannot pull the trigger while not disturbing the sight picture then all the target acquisition, drawing, and reloading will be for not. For dry fire practice place a quarter, nickel, or dime the choice of coin is yours on top of the gun right behind the front sight. Pull the trigger without making the coin fall of the gun. When you can achieve that with consistency then add this which would be practice, acquire targets/indexing, drawing.
Dry fire is all about trigger pull practice