Accelerating at the bottom of the swing

Hi - I am brand new but became interested after hearing about Tom on Golf Smarter podcasts. In my limited time I have had in using the techniques I have learned here, I am hitting MUCH better shots. So thank you, Tom. Question - and I apologize if this is posted somewhere on your site. I am trying to find a smoother way to build clubhead speed at the bottom of the swing. Like many golfers, I have too much speed at the top of the backswing, which is a waste of effort. Thanks in advance.