I am not a financial advisor, but I think markets are far from bottoming out. NASDAQ touched the resistance line, if it breaks it, we will go down even more.
I also have multiple stocks that are >50% down, but if the fundamentals of the company has not changed since you invested when the price was higher, why not to buy it cheaper with discount to DCA.
As for me, in this market turmoil I just keep saving cash for the bottom and put small sums to DCA in my current positions, as I think it is a great opportunity to buy for the long hold.
Just try no to look at our portfolio every hour, because it will no change everything the less you look, the calmer you will be.