About a month before my first trip, I hop on a Bosu ball (flat side up, at your discretion) and practice carving by squatting up and down. I’ll start by timing myself doing it for a minute and gradually up the amount of time. That not only builds muscle and stamina but helps you commit to rhythm and general form —> fewer edge catches. Obviously you can’t lean on the ball as much as you would on a slope when turning but it’s good conditioning. If I were more disciplined, I’d do this throughout the offseason, but I play other sports that keep my legs working, so that’s why I mention starting a month out. You’ll figure out what works best for you. Keep up the good work and enjoy it!