[2019] Rebind "Slide"

Rewriting this cuz previous version was confusing:

Basically all I'm saying is: I think the key combination for sliding from a sprint is too complicated. The standard bind being on "Pressing CTRL twice while holding Shift" is hard to execute for me, idk if I'm just not used to it or if my brain can't handle it, but I've never seen it in any game and it's needlessly convoluted. I liked the way it was in BF1, single press, once the slide is over, transition to crouch. This has been replaced by instant transition to crouchsprint.

The way I want it is:

-Pressing CTRL while holding shift = Slide, then crouchsprint.

-Letting go of shift, pressing CTRL and holding shift again= crouchsprint.

The keybinds for this aren't very descriptive. Can anyone tell me what to bind to what to have it like that?