Experienced people will never buy Bitcoin when the price is rising, they tend to wait for the price to drop and then buy and store it for a certain time to take big profits later.
Buying at the dip will disappoint you because no one knows when the dip will cone and what if it does not come will you keep on waiting and wasting the time that you should have use to build your bitcoin investment as a new investor. Buying at the dip is just like you planted a crop and you didn't care about watering it regularly and adding manure to the soil to make your crop very productive, rather you decide to wait for rain to fall and water it. That crop will not grow well or might not survive in the early stage because it will lack some nutrients and stay water for proper growth.
This is how your bitcoin investment will be like when you are waiting for the dip. A new investor needs to buy regularly with DCA regularly to keep his bitcoin accumulation ongoing persistently and consistently so that you can reach your bitcoin target faster. It is just like planting a crop and you keeping on watering and adding fertilizer to it so that it grow fat and be very fruitful.