Forcing my thumb to be more flexible

I’ll never be Ed but he inspires me.

Recorded a CtC shot of both, Index and then Middle.
Any comments on it?

I feel the middle is more snappy. And I like that attack. It also feels better… but more uncontrolled. Yet looking at it in slomo my index is missing a lot of strokes.

Trying to force my thumb into a greater range of motion has honestly helped me do the middle finger grip with more control and most of all… less strain.