SaMb,
For my money, the quickest way to ingrain a motor memory skill is by using "blind" bale practice. It's an accepted fact that the mind can concentrate on only one idea/concept at a time. So, get up close to a target butt, so as to have no missed shots, line up, close your eyes, and draw to your new anchor point, focusing all of your attention on how it feels. You can either carry through with your release, changing your focus to your back tension, or some other aspect of your form, or you can let down and start over. I prefer to follow through with my release, switching my focus to my back tension.
If you'll begin each practice session with a few minutes of "blind" bale practice, you'll find that your new anchor has become automatic in no time.
Above all, keep it fun!