Perhaps try shooting a lighter draw weight for training and practice. 60# is a lot of weight and may limit your growth.
Shooting ~35# to 40#@ your draw length will permit you to shoot more at each session before fatigue is an issue (causing form degradation and possibly making things worse). Shooting a lower draw weight allows more experimentation, practice and training.
If you understand the difference between "practice" and "training", the use of a bow weight that permits repetition becomes a necessity.
"Training" relates to incorporating something new or different. We need that to improve and grow.
"Practice" relates to repetition or reinforcement of that new, different, possibly weird-feeling training item to properly evaluate its benefit. This includes developing muscle memory, and mental acceptance. It allows the body and mind to go from having to really concentrate on doing "that new thing" to being "second nature."
A heavy draw weight bow will likely create fatigue before enough repetition or experimentation can occur.
Break things down. A "good shot" is the result of doing all the right things in the shot sequence. We all want the arrow to hit the Bullseye, but in reality, we shouldn't be concerned about the end result, but rather the steps that take us there.
Focus on your form, alignment (see the wedge series on YouTube), release, etc.
Break down your shot sequence, and focus on your release. Do blank bale shooting to train/practice your release (see the wedge series on release, "focus on release, not follow through of draw arm"). Blank bale shooting really focuses (for me) what a good release feels like-as well as a bad release. Jimmy Blackmon has several great YouTube videos on bow shooting. One is blank bale shooting at a vertical line/string. Find it and watch it. It was very helpful for me
Then, put it back together in a sequence.
Try it again, and train/practice over and over again. Build each part of the sequence, so the end result of a good shot makes sense-and is not a mystery how it happened. You should eventually be able to specifically explain why the good shot was good, and why the bad shot was bad-and go back to work on that specific issue for improvement (training/practice). Wash, rinse, repeat until improvement comes.
Shoot a lighter bow for fatique-free training and practice isolating each part of your shot sequence. Then, try putting the sequence together on the light bow, and THEN the 60# bow.
Form follows function. Function follows form.
Improve your form, and technique throughout the shot sequence, and the good shot will be the result-which you could predict as soon as the nock is off the string.
Good luck
My 2 cents.