Try it! It's worked for me. This month is a great example. Since March I've been buying with half of my buying funds on 1st. Half being put aside in hope that I could get lower prices than that. But not happened in April, May, June and July. The patience is the key. August saw a major dump and at 51k, I went all in. I got nearly 50% more sats than I could have had without this strategy.