I do agree, it's not like DCA is etch on stone, for small investors like the majority of us, we could used a tweak and see how it will fit on our budget. Maybe can can start small and make some adjustments based on our regular income. The key here is to be consistent, $10 or even $20 a month that wouldn't hurt your budget and see how it goes. For all you know, it will grow significantly over time due to compounding. So even with limited resources, you can still used this method each month or weeks and be as effective like those whales or institutions. Again, there is no secret here, just focused on long-term growth, and DCA will be your friend.
I love this. The DCA approach is just an approach, there are many other approaches to invest wisely, the main consideration is for the asset to be trusted. Thankfully, Bitcoin is a trusted asset and investing similarly to what you explained helped me mainly between 2022 and 2023, and part of 2024.
What I did was to convert almost all the money in my bank account to Bitcoin, I only reserved about $100 (after conversion), it was crazy

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I continue to deposit about 85% of any money that enters my account into Bitcoin those years. I practically made Bitcoin my true saving account and it even helped me to avoid unnecessarily spending for I was so determined to do it until a point in 2024. I am happy about this approach today because I wouldn't have done more if I only stuck to a DCA approach.
That's the point, as long as we can buy bitcoin regardless of whatever scheme is done as long as you are comfortable then do it as long as you don't make it seem as if everything stops in bitcoin like you did because for me leaving 15 percent is quite crazy and too aggressive a step to take even though for now you must have felt pretty good results. Hopefully you can still hold your assets now because after all when you release all ownership then that means you will not be able to get back the bitcoin that you already have because it doesn't belong to you anymore.
But for the future even though all the ways, be it DCA or other strategies in buying it are still quite good, we still have to pay attention to our financial condition because for me the way you do it by leaving only 15 percent of everything you have is the most extreme way and I will dare to guarantee that I can't do that and don't even want to do it