Sell's everything and get out of the market at the current price, I think it is only appropriate if you are sure of further price reduction and provided that in the future to buy back your positions at a lower price.
We are now on a strong cryptocurrency bearish market and getting out from this market is indeed a good idea because the price may go down further and it is better to get out now and just wait for the market to have a reversal and comeback and that is when you will enter the ride the market while it is going up again.