Tho me, there's no need to stop your regular accumulation if you're yet to reach your accumulation target, slowing down on your accumulation can lead to over relaxation and possible termination of your accumulation journey.
I don't think that if an investor has accumulated from 60% and above of his bitcoin target, and he choose to change his accumulation strategy from DCA to buying at the dip, that it means he is unserious with his bitcoin accumulation and can lead to termination of his bitcoin investment. Every investor should choose whatever accumulation strategy that will suit them at every point in time based on the size of your bitcoin portfolio and your own financial circumstanced playing around you at that moment.
When your bitcoin portfolio has gotten to a particular size, if you use DCA to continue your accumulation, you might not see any significant increase in your bitcoin portfolio because the of amount that your are using to DCA is small. But if you keep all those money that you are suppose to use for your DCA and use it to buy when bitcoin price dips, you will see a significant increase in your bitcoin portfolio. If you have accumulated up to 60% and above of your bitcoin target, waiting for the dip isn't a problem anymore because as bitcoin price is increasing, your portfolio is also having a significant increase and you are better off than a new investor who just started his bitcoin journey.
You can continue your accumulation and save part of your discretionary income expecting the dip to come so you can lump sum and buy more at lower prices.
When you have some amount of money down waiting to buy bitcoin when the price dips is called buying at the dip, and when you have an extra cash that you don't have any plan for because you never expected it for instance, my Boss gave me $400 at work today for bounus and I used that money to buy bitcoin the moment I got home with $300 immediately to add to my bitcoin investment is called lump sum. When you want to lump sum, you do it right away irrespective of bitcoin price at that moment, without waiting for the price of bitcoin to dip.