In my opinion you should hold your Neo coin will be better for your investment Because the main factor is that you can make earnings by taking the neo by getting free GAS , so whatever you are getting daily loss , leave everything worries about it and then go for the hold for long term until its price get increase , second thing here you should do that if you have no control then sell small amount of the Neo and then buy dash and also another coins Because here to go with small no. Of the coins to make trading is not a better way to make trading , Because the market of the single coins can go down much and can go up , no one can make predictions perfectly .
So hold your investment in your old coins and wait for perfect timing and go for trade with multiple Coins .