What I tell fellow Bitcoin investors when we are having chats is that we should buy when we have available funds for it. No need to wait for it to dip before buying because you don't control it's price, it is a volatile asset that can swing up or down without notice. If you believe that Bitcoin can always reach ATH in every bull circles that should be your focus because at any price that you buy you'd always be in sure profit when another ATH happens.
Bitcoin price shouldn't be the main focus of any serious investor, if they continue targeting a very low entry point, then they would surely remain spectators for long. Every price you meet Bitcoin is a good entry price and as long as you have discretionary income there is no need to keep waiting, you should follow up your Bitcoin involvement practically by buying at good intervals and holding . Good thing the DCA strategy provides every investor the opportunity to buy Bitcoin across highs and lows thereby smoothing the effect of volatility on their investment.
The more they wait for a targeted dip, the more they procrastinate their buying Bitcoin and possibly their target dip may not come by and they end up not buying Bitcoin for yet a whole cycle and they end up wasting unnecessary time that they would've used to obtain a good stash of Bitcoin for themselves. As time goes by their procrastination might turn into fear and resentment towards Bitcoin and they may end up not investing at all and when Bitcoin price guess very high, they always end up in serious regrets that they were not actionable with their involvement into Bitcoin.