The ideal is always to buy cheap and sell high, buy in the dip, but what do you expect it to go down like before? Without a doubt, the DCA method is the best. Even with the current market, the price of BTC, if I have the opportunity to buy, I would do it. The price doesn't matter to me, what matters is having BTC no matter what, even if I buy a little, If it goes down, the idea is to buy more in the dip. That's the idea. I respect everyone who is looking for or hoping to buy in the dip, but this year is already ending. It is predicted that by January the price of BTC could rise much more, so is it not cheap to buy now? Maybe, it's a risk that few of us take.
It's better to take the risk now and invest in bitcoin than taking the risk of not getting started right away when you have your discretionary income ready. This is because whatever risk you take now to start buying and building your bitcoin at this current price is not a waste of time or resources since you are investing in the long-term, and your bitcoin size will be in a better position than waiting for nothing, just because you have some waiting idea.
An new investor or someone who is still accumulating bitcoin shouldn't think of selling when the price is high because he hasn't reached his bitcoin target an don't have more than enough Bitcoin in his possession, so that he doesn't destroy what he has started building for the future.