ChatterBox
Searching for an alt.
I play on stick and that's pretty much what i do too, there's a big enough window that you can see beetle take a step, then go to neutral for a few frames then hit the b3. You'll totally get it with some practice.I worked on it in mace stance last night.
I had to step forward, then hold back, THEN hit the button. Lol, sometimes my hitbox controller gives me inputs way faster than the game can read them...
But hopefully your advice helps others too