And nothing needs to be done. stupid hold if it is not your last money. And in general I would advise to be bought in addition on each point. Let's say NEO costs 14 now. When he costs again 13 I have bought still, too most on 12 and eventually to sell also, a ladder.
Buying some during this down trend is also a good decision. Market went down not only btc are suffering so you are in good point for buying in addition to the coins on what we have. Those coins on what he have can over come and will rise again hopefully.