You didn't mess it up. Looks like you raised you FC from 5 to 27 ish. That's good for your CYA level.
So now the Chlorine will be busy working away to oxidize the stuff in the water. In the morning try to approximate your FC level if you can - that will give you a ballpark to know how much more chlorine to add to boost it back up to 27ppm.
The trick is to keep the FC level up at shock until everything in the water is gone - and then you go back to running the pool at the normal levels.
Keep the pump running 24/7, keep the pool at shock level, brush everyday. The more diligent you are with the chlorine level, the quicker it should clear.