The first thing I would suggest (because it’s the first part of your delivery) is to start with your feet closer together to eliminate the weight shift towards 2B as you go into knee lift. In your video, watch your head relative to the pole behind you and it will become very obvious how big your weight shift is. This movement towards 2B can be a source of control issues, it makes you slower to the plate and it tips off baserunners (assuming it carries over to your delivery with runners on base).
Try to get all of your movement going towards home plate. Practice this a bit and then see what it does to your timing before making other adjustments.