I did the same thing for a while, and shot like €rap while I was doing it. As much as you need a relaxed string arm, you need to have a solid bow arm. Get that bow arm up there and hold it in place. Once you get to full draw, the only movements should be micro movements that you are hardly aware of. Push toward the target. At one time, I would have said that without reservation, but evidently some people overdo it and roll their bow arm shoulder out of alignment. So push, but not so much that you push your shoulder out of alignment.
Keep a "T" shape in your arms and shoulders. If you're shooting downhill, anticipate that by putting more weight on your front foot and flexing your hips back so your shoulders are angled downhill. If you're shooting uphill, put more weight on your back foot and flex your hips toward the target so your shoulders are angled uphill.