I don't think this is a wise idea, how do you predict which blood bath is the last blood bath? Unless you have some holy grail it's impossible to predict the last ultimate bloodbath, better strategy is to buy in lots, buy a certain percentage in every blood bath you see, let's say the price of BTC falls to 50k, you fill your bags by 20% then when it falls to 40k you buy another 20% this way you will be able to average your whole portfolio at a good price and will not miss on any opportunity, otherwise, if you keep on waiting for another dump and market rebounds from that point, you will be losing a big opportunity.