I've been trying to incorporate the same thing. You're right, at first it actually slows you down, I think part of it is that I naturally tend to commit a bit with that first step when it should just be used to "load" my legs so I can take the second, bigger step more quickly and accurately.Had a solid go at the round robin last night. Was #2 at my table but won all 5 of my matches. I've been focusing on taking a small step a moment before my opponent serves the ball. Once the ball is hit and i can see exactly where it s going, i take another small (or large if its wide) step to get into the best possible receive position.
I literally just started doing this a week ago after watching a video of Fang Bo teaching his students this and it's already paying off. The first week, it sort of threw off my timing so i think i actually missed some points. but in week two, i'm 100% in better position for serve returns. One opponent, who almost always gets 90% of his serve points against me..... i was getting at least 40% of his serves last night using this technique.
Video in mention:
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I play against this one Cpen player often who serves mostly fast, deep, long serves to my BH side with top, under, and no spin variations. He hides it completely with his off hand so the only way I can read it is by its bounce. Consequently, I have to back off the table a bit to give me enough time to read and react to it, and he counters that by serving very short dead serves to mix things up. With this new step I'm now able to stay back but still be able to reach the short ones quickly enough for a solid return. Consequently I came the closest ever to beating him last week, lost in the 5th set in deuces.