I was also panicking today with sudden 100$ and more shrink in the price however within panic i try to search for the reason and found that bitfinex is down and people are panicing causing drastic drop however i think price will soon get rebound to 700+
Some people are selling off, so it puts back the price off obviosuly.
But we still got like 20 something days left or maybe even less and the halving hasnt started yet.
I would sell once it actually hits within the same week to see prices rebound before or after.