"how are you determining what too many shares traded for a down PPS day is?"
I bought in the morning gap down. This is the time to buy if you think it will rebound. It didn't rebound but went lower on an increased volume from the past few days.
Tomorrow,I wil look at open and if it gaps down 10% I will buy again. If it goes up I will wait till it goes up retreats and goes up again to break the first high. All of this has to be on volume that is at least as much as today.
You should always compare volume with previous day/days volume.
I cannot predict what will happen tomorrow without a PR but with my entry and exits I keep losses at a minimum.