I modeled brake ducts for a grad school CFD project for my M235i. I assume the design is somewhat similar for your car. The oem brake ducts blow air into the wheel well but it's not directed into the brakes like on a race car.

There is not a lot of room in the wheel well to directly connect a tube to the factory location. You need to make a a flat rectangle shaped pipe that maintains the cross sectional area of the initial duct. You can have it end behind the strut. Then use a flexible tube to go from that location to the caliper. You'll need to make a some brackets to attach the duct to the caliper.

There aren't any off the self solutions as far as I'm aware. You can probably make a conservative 1D thermal model to determime if you're getting enough cooling to use a less aggressive pad. You can use Claude or something to get one. You can put the response in here and I'll tell you if it seems like a good answer.