Now as the 4th wave has continued to developed, I believe that the 4th wave is actually an abcde correction rather than an , in this case it's a contracting triangle. Subwaves are 3-3-3-3-3.
It seems that the triangle should be done right before the ER is released. If it isn't completed then I would not try and long. ER always jumps in the direction of your wave, or next wave if one has just been completed.
Don't take this advice too seriously, just posting for fun.