I don't trust any "buy the dip" guide. And you know why? Because the dip "today" may be one thing and the dip "in a month from now" may be totally different, maybe bringing even lower price.
No. There are day traders that buy and sell and sometimes can catch the dip at buying, today and also in a month, just because they buy in almost every "moment" that looks like a dip.
We, the rest, simply buy now and then, and the spread will allow us get Bitcoin at an average OKay-ish price.