Battlfield 6 alternate button settings

I always play my shooter games on alternate button settings to swap the crouch en melee buttons. Now when i try to deploy my bipod on any weapon it gives me a hint. “To deploy bipod press R3 (the right joystick). But that is my crouch/prone button. And trying to use “O”now my knife button. Wont deploy at all.

Any ideas on how to fix this?