Really appreciate the help, this forum is more valuable than some stuff that gets stuck in the Library of Congress.You’re on the right path. Get as much wingshooting instruction as you can with a double. Then go back to your rifle and you’ll be in way better shape to shoot effectively. Weight off your heels, arms forward, elbow up, most of the weight on the left hand forward of the forend. Comb to face, not face to comb.
it will come together and the recoil will diminish.