DCA involves consistently investing smaller, equal amounts over time, as opposed to making large, irregular crypto purchases. Think of it as making payments for a product in installments, at regular intervals, until the total is paid off. When you regularly invest in your preferred cryptocurrencies, you automatically accumulate more assets over time, regardless of market fluctuations. This can help you grow your holdings and potentially reduce your overall average cost during market dips.
DCA does not only include investing small amount of capital over time. Small or big capital for each time of DCA depends on your total capital for investment and your DCA plan.
You even don't have to use a same amount of capital for each DCA round. Sometimes you can use smaller or bigger amount of capital for a DCA round. Because it can depends on your feeling about the market trend as well as your available funds for DCA at that time. If you see the market is good and you have money in hands, you can DCA with doubled capital than your normal amount.
Want to have DCA math and tool, use it
https://dcabtc.com/I didn't bother to check the website you attached because you are already deviating from the true reason and scope of DCAing in investment. This is an investment strategy that has longlived before cryptocurrency and the main aim is to divide your money into equal and smaller parts and invest regularly. What you are describing here is quite the opposite as your plans will not be equal and the investment will be irregular. All these are what DCA itself preaches against.
However, you own your money and you can invest it the way you want, and just like me, I practice something similar to what you explained, but we should never call it true DCA, it's a different thing entirely.