Select the circuit color in which you can climb about 3/4 of the boulders in 2 or 3 attempts. Attempting 15-20 boulders should be your goal, trying at least one boulder on each terrain type. You have one attempt on each boulder.
Whether you finished or not, record your result. Mark the climb's terrain and take notes on what was difficult or easy about the problem. Move on to the next boulder quickly (2-3 minutes between attempts is optimal).
Remember, one attempt. This will force you to analyze before you start climbing and to try your hardest on each boulder. It’s as much mental training as it is physical.
Record notes about your attempts, and analyze them after your session. Look for patterns (ex. I fell on all the slabs and finished all the steep problems).