just try to keep your head still, play the ball under your head if possible (straight deliveries only obviously) and have your momentum moving towards the ball.
There are plenty of examples of shots where your "momentum" (ie movement of your COM) doesn't move towards the ball. Pretty much any backfoot cover drive to a spinner is played whist COM is moving towards the leg side, lots of hook shots are played with COM moving towards the offside, cuts and bf drives to pace bowlers are often played with COM moving vertically upwards (often the batsman jumps in the air) and a wide variety of shots, for example sweeps, dabs and some drives, are played with no significant movement of the COM at the moment of contact (and hence no "momentum") at all.
Whenever there is movement of the COM towards the ball through contact, it tends to be a coincidence rather than a factor in bat speed or connection quality.