It’s a scooch/small backpedal to allow the slot WR to eat up space and meeting him at a catch/leverage point. If at the catch point he is inside of you catch at the low hip outside. If he is trying to get outside. Shoot hands, continue to work him outside and run.
I've got a question about your scootch-to-catch technique. When you're teaching it, are you still letting a guy scootch back, then 45 kick, and shoot hands? Is it just a slower scootch, trying to let the WR eat the space? Do you have a progression of how the footwork looks?