How do I disable weapon switching using the right stick in Borderlands 2 VR

Borderlands 2 VR has a very irritating setup where if you set your right stick to turn (as you almost certainly want to for seated play) it does not remove the bindings to allow weapon selection using the right stick. This is super inconvenient as generally you don’t want to change weapons when you turn. There is a sort of workaround of only equipping two weapon slots, but generally speaking, it’s useful to be able to equip all four weapons.

Is there any way to disable weapon swapping using the right stick, and just have the B button cycle weapons? There doesn’t seem to be a UI option to do this, but maybe it’s achievable by editing config files?

ETA I’m running this on Oculus Quest via Virtual Desktop from Steam.