"slow your feet"...I disagree respectfully to a point. We haven't seen his game. Advice is generic if none you us seen his game.
So indirectly some of you are saying, let your swing follow your feet...that will can cause issues. what if the OP has a short swing? we don't know...the key is having a good swing and timing so the feet walks naturally. his feet may be trying to catch up to his swing...?? we don't know...
A video is important before you guys can advice him IMO.