Market cap is falling without brakes, and today some whaleshave transfered thousands of eth to exchanges (some of them, are big whales that acumulated eths from since their price was few cents).
When this whales sell their eth for some million dollars the falling will be tremendous.
maybe it possible after Ethereum hardfork are finished, investor trying to selling their Ethereum and fork asset, and make market down again
Most likely the market can go very low around 2500 $ bitcoin and we will be able to see 40-50$ ETH. But this will be the starting point for stabilization and gradual growth by 2020-21. You need to be prepared for this