This is basically the most simplest but yet hard way for some Bitcoin investor. The Dip is handle by different investor in different ways as some of these investor tend to be frightened even though there are aware that their money in the investment won't dry off, that fear is still in their mind and they tend to succum to it and do the least of which is expected from Bitcoin investor who are planing to hold their coins for long .
While some other investor actually use this means as an advantage and this type of investors are the strong holder who always stick to their plans and strong principle when it's comes to tempering with their holdings (Bitcoin).
If you can't afford to buy during DIP then don't force it because for this method you have to be ready with the capital because when the price drops then buy, but when the capital is not ready then don't do this because it will be a complicated process later especially when the cash flow is unstable, still the best choice is DCA you don't need to collect money first, but when you get every month you can go directly to DCA regardless of how much it is still the best way.
I know buy dip is a way where you want to get bitcoin at a cheap price, this kind of purchase will not be every time because the price of bitcoin will definitely go up even if it goes up from $25K to $30K but I'm sure you want to buy at $25K rather than $30K, so with DCA it's not like that regardless of the price we will continue to get bitcoin every week if that's your plan.