Waiting for the dip is a bit hard to predict and no one can do anything about it hence market is fast paced that moves instantly every day and don't rest all. DCA would be a great solution for buying and stocking assets during the bear market and dip market is just a bonus to buy more at low price. Remember people waiting for bitcoin to dip at $10k? It never happened at all otherwise it pumped hard back to the top and leaving $10k boys at the bottom.
Do you think Bitcoin price can fall below $10k dollars? This may or may not ever happen because Bitcoin has a lot of support and more people are involved in Bitcoin than ever before so Bitcoin may never drop below $20,000 again even though we had a great opportunity to buy and collect Bitcoin a few months ago because when Bitcoin The price dropped to $15,000. But yes DCA can be a great solution since we can't predict the price of Bitcoin for granted so it is not possible to predict exactly when the price will be. Therefore if we follow DCA then our purchase price will be minimized and loss recovery will be possible quickly.
Bitcoin is unlikely to drop to 10k again, but the possibility of dropping to 20k is not too difficult, you are too subjective if you think bitcoin will never drop to 20k again. If we had another black swan strike, even adding millions of new investors wouldn't be able to stop the bitcoin dumping. Like many are saying that the halving event is approaching and the demand for bitcoin will increase, bitcoin will never drop below $30k. But in the end, bitcoin is still trading below $26k once again.