Bitcoin has only limited supply of 21 million with only 10% of it remaining to mine so there is no such thing as over accumulation for me. We should accumulate bitcoin as much as we can. Doing DCA strategy using our spare amount of money after paying the essential expenses is the best approach to increase our holdings without risking our financial security. DCA also is less stressful as you don't need to time the market waiting for the bottom to buy. We're still at the early stage of bitcoin's mass global adoption. There's still plenty of room to grow. In 5 or 10 years, once more countries become interested in bitcoin, it's still possible for its price to increase double, triple, or maybe even higher. Our aim for now while accumulating is to be patient and believe in bitcoin's long-term potential.
As it is said - the best time to buy BTC is the current day we are in

There are no perfect entries, because each one would become perfect if we hodl long enough.
We can feel it at any time when buying Bitcoin, but not all of us Bitcoin holders have the same mentality. Different people like to take different actions, so in this case, only those who will hold Bitcoin at a long-term rate will be able to buy Bitcoin at any time and in any situation. But those who are able to hold it at least until the bull market should basically buy deep, in this case they will buy deep and follow the regular DCA method, so if it is possible to hold it for a long time, then the investor may be able to change his mentality and hold it for a long time.
But the most important thing for the investor is to use the DCA method, in this case we will be able to hold it for a long time by following the DCA method and our Bitcoin investment will be able to hold it for a long time.
However, the most effective way to invest in Bitcoin is to invest for the long term. In fact,
it may seem easy to buy DIP for short-term holding and sell it in the bull market to take profit, but it involves a lot of risk, because the movement of Bitcoin is very unpredictable, although it is not impossible to making profit with that, but also the investor should definitely consider its potential risks and make a decision.
If you want to achieve the greatest success from Bitcoin safely, everyone will definitely talk about long-term investment through DCA, because it is the most convenient and safe strategy. So all in all, an investor must adopt an investment strategy according to his risk taking ability.
The effectiveness of holding cannot be felt in a short term no matter how anybody tries to sugar coat it with bull-run expectation probably after buying the DIP, one thing you must understand is that, in some cases what comes as a disappointment for some investors especially newbies is the idea of investing in a short-term and waiting for a bull-run forgetting that bull-run is unpredictable in most cases and doesn't come that easy. An investor should understand that his success in Bitcoin is on the steady growth of Bitcoin as an asset and not entirely the immediate excitement of a bull-run that doesn't come steadily, although the bull-run is a sudden growth that excites every investor.