As I have seen this already too many times since past few years, I believe it would be beneficial to share my experience with crypto markets. Do not sell your coins/tokens when the market is dropping, it's just a pure speculation and perhaps market manipulation from whales who only target to earn on whatever the price moves they can achieve. If you're reasonable, sell when market is high and buyer/hold when market is bleeding. I hope this helps you to decide 
A lot of empty coins will never grow in value. And very often, a quick sale is the only way to get a good profit. We need to study the project and analyze the prospects for price growth for a particular token.