Investment is one economic way of sustainably developing our funds and surely we can't do that successfully in a short term duration. For short term period bitcoin investment there's the tendency that the investor may be less profitable or not profitable at all within the short duration, that's what makes a long term duration the best investment plan for bitcoin because you can always adjust your time further based on the market performance if price takes a downside direction and sits there for some period of time the investor doesn't grow anxiety since from the initial the plan was for a long duration.
Investing of course DCA method is best to invest in Bitcoin and not anywhere else. Because if you invest anywhere other than Bitcoin then your entire money will be at risk. So you should also have a plan how to make your investment long-term, and planning is most important to save long-term investment.
DCA method is the easiest method for any investor to multiply his money here. If the person wants he can deposit his money continuously weekly or monthly like when I enter this thread I immediately start doing Bitcoin DCA method after few days. I'm almost two years past investment age and the most self-sufficient I've been since 2023.
Of course, the best time to invest is during the dip.