You've worked yourself into a very bad habit, hunt4hobbie, and it's going to take some real work to get out of it now. You're going about it the right way. Hope it works for you.

When I switched over to release, I made the same mistake you did and adjusted my releases as light as I could without having the things go off accidently. Wound up with the flinch too, and started trying to get rid of the habit by doing the same thing. Finally got tired of fighting it, so I sold my short bows and went back to fingers. No trigger to anticipate. You just quit holding the string when everything feels right and let it slip away.