I call this 'chasing a bull run'. Some people would wait through the bear market but attempt to buy in when the price is already picking up momentum and we are looking to get into a bull run. It's very risky and one can easily lose money trying this. If you jump in too early you could find yourself at the top of a spike (not the bottom of a rally) such as what we experienced multiple times in the last months, and if you wait too long you could miss the bull run completely.

The best time to buy us during a dip, the second best time is whenever you are convinced of it. Just make sure you're investing amounts you can afford to lose.