See some long hairs still..
flushing doesn't accomplish anything, but you can save a little effort and let it cannibalize itself. I'd wait until the plant is fully plump, though. Then you can skip mixing up fertilizer and go water only and same procedure as you usually do for irrigations otherwise.
If you think you are 7-10 days away, then go ahead, but i think you have a bit longer. You can always reverse course or step down to 50% and see how fast the canopy decrapitates... You've got some limited damage in canopy, so don't go too long with water only.