I just tried day trading in eth and the price fluctuations which happens continuously is something where we can make profit in daily basis, guys from today morning to evening I could have earned nearly 15 to 20$. Buying low and selling in a reasonable profit, again when it comes to my price I use to buy and sell for a reasonable margin this will work only if there's continuously fluctuation, just have a try and make daily profit.
The price of ethereum is indeed unstable because the price of bitcoin has decreased and that often happens and makes altcoins including ethereum go down. The time is right to take profits if you have large capital it will be an opportunity to get a lot of profit, it is good enough if you take advantage of all that big profit.