Cod mw is there a way to immediately go prone

[Catacomb]

I would like to ask if it's possible to make it so that you immediately go prone when you press the button, now it's so that you first  crouch and when holding the button for a few sec then you go prone, is there such a possibility with the Apex?

[SixShooter]

The xim is a controller and it does not bypass the games mechanic for a controller. If you can immediately go prone with a regular controller you can do it with a xim. If you can't then the xim won't do it either

[ceebs]

Don't use Crouch or Prone, rather use Go To Prone (I have it set as L Ctrl on my keypad). Tap it to crouch, hold it to go prone. It won't allow you to prone instantly but it's the quickest way to drop to the prone stance.

To paraphrase SixShooter, as you can't drop to prone from standing with a controller, you can't do so with a keyboard via XIM.