This may be frowned upon in an archery forum, but have you taken a trawl aroud the web looking at pistol/rifle shooting sites? The issues are very much the same there. (I started off shooting rifles & still dabble a little in air pistol).
If you think about it, the distance from brain to trigger finger is the same as brain to bow hand & more than brain to bow arm. Any interference that you program into the shot can be activated before the trigger is jerked... & away goes another dodgy shot. Remove the awareness of the trigger - or iron out the interference & you shoot better. Just be wary of developing new interferences
There's one trick that the pistol/rifle shooters can use that we are denied - dry firing (& for the shooters of live rounds there's always the option of dummy rounds, to see how bad your flinch is). No idea how to extend this to compound though