There is absolutely nothing wrong if you sell at the top and sell when there is a drawback. I know people that have been doing with some fraction of Bitcoin and they have accumulated an integer worth of Bitcoin since they started and at the same time, there is now people that has lost good amount money from this, it's all about how you are good with the technique but I can tell you for free, it's working very well and funny thing such people don't even do DCA.

Though, if you are not good or versatile with market, the best you can do is to do DCA, people that engage with this technique are people that understand the market. Forget about this Micros pull back and there news, what you are seeing now might not be what is happening in real sense, you don't know exactly when they are going move he market neither you don't know when things are going to comes down. It's better you keep buying at every opportunity and hold as long as you want.