RE: Struggling with holding low
Back off the draw weight 'a whole lot'. You should not be fighting the bow. Get 'comfortable' with your form....consistent form. Shoot and then shoot and then shoot some more. At least a few days at 'minimum DW'.
Slowly increase your DW as your comfort level improves.
RELAX, and follow thru on your shots...Rome wasn't built in a day. TIME is of the essence.