Every one has to do what is right for them as it relates to conquering challenges.For me target panic is a mental condition not a physical one.I needed not to try so hard,not to have it matter so much if I shot perfectly.Through that type of detachment and a complete focus on form I was able to come to a level of enjoyment and proficiency that I don't believe I would have achieved any other way.
I strongly encourage you to read everything you can get your hands on about target panic,see what the professionals say.If you read enough you will see a pattern,the same things being mentioned over and over again.Relax,have fun,have a shot sequence,challenge yourself to let down on a shot even when everything feels right,just to show yourself you are in control.If anything breaks down in your shot sequence let down.
I don't know how helpful this is but there are a lot of very good archers who have battled this,a lot of archers who have realized the importance of back tension,shooting back tension releases all year long and switching to index finger fired releases prior to hunting seasons,and even then using their index finger as a hook that doesnt move,executing the shot with back tension to get that surprise release that you want.
Good Luck!