You can see that all the action is dependant on the tick volumes being above 2000/min.The first rise doesn't end until the up tick vol declines to 2000/min. At this point, the down tick vols. are barely making 2k/min, and therefore there is little down pressure, reaching a peak , eventually at 19:19. Note the immediate lower hirgh on the down tick vol, against the higher low on the price, giving a volume divergent bottom again.
Note also the build up in down tick vols from 16:09 to 16:28, adding to the confirmation of the coming top. This shows sellers are gaining interest, and a hold, along with the bulls covering.