As soon as I started reaching full anchor, and holding a couple of seconds while concentrating on the "spot", my shooting took off in the right direction. I used to snap shoot and was never consistent. Olympic archery coached cured me quick. Was not allowed to release, the nock was epoxied to the string. The bow was 70" and 22# draw. I could hold it all day. Personally, I now wont hunt or shoot a bow that I cannot draw and hold at anchor for 5 seconds, or the bow is too heavy for me. I can work up to it if I need to shoot heavier.
Try it, it may work for you too.