my joycons are both connected to my macbook air and the mod itself runs perfectly fine, my joycons just aren't being recognized when i click the controllable icon in game.

Try using this guide, even though it says Linux it has been reported to work on macOS. This will allow you to use Joycons on macOS. https://mrcrayfish.gitbook.io/controllable-documentation/guides/how-to-connect-a-gamepad/method-4-steam-virtual-gamepad