While I am in agreement with Arne, I don’t believe that bone on bone alignment is all there is. Do work on bone on bone alignment until you feel you have gotten all the help from bones that you’re going to get. However, it is impossible to achieve a physical alignment where your bones are totally supporting the weight of the bow, because of the angle between the arrow and your bow arm at full draw. In order to have complete bone on bone alignment, that angle would have to be reduced to zero.
So that leaves us with strength. Strength is also important in achieving accuracy in archery. I’ve spent quite a bit of time with Rick, and can tell you that he spent a lot of time in the gym in his prime, and his arms would have been the envy of many Olympic weightlifters. His way of teaching good alignment is very similar to Terry’s form clock, which you might like to review.
I also use the 2 second hold, and was not as steady as I needed to be at first. Most important in solving this problem is developing good bone on bone alignment. Second most important is just shooting a lot and not cheating on the 2 second hold, even if you think you are more accurate with a shorter hold. Usually when we change anything, we will be worse for a while until we become comfortable with whatever it is we have changed. Third, build up your strength. I’m not crazy about spending a lot of time in the gym (it gets annoying after a while fighting off all the girls who want to admire my body) so I practice holding for extended periods of time every day. My routine is to hold for 20 seconds, 5 reps. I built up to this over about 6 weeks before I could comfortably do this with my regular bow. If you don’t have any lighter weight bows to start with, use exercise bands, etc.