What I see is that you are starting too far up on the approach and then taking 3 BIG steps, not leaving yourself time or room to take the pivot step and then slide.
So you end up making the pivot step a stutter step in order to get your swing and body there in time for the slide.
Try moving back on the approach. Take your 5 steps without the ball in your hand and try to make sure that you make each step bigger than the next, starting slow and small and ending up with a strong pivot step and good slide.
Work on it without the ball until you are comfortable with the steps, then try it with the ball.
True, you might be able to get away with keeping the stutter step, but odds are you won't be able to generate any power or stability being that close to the foul line with 2 steps to go.
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Jon Brandon
2003 PBA West Region Rookie of the Year
"You don't score, until you score......"