Lest assume this senerio that, Mr A uses DCA uses DCA to accumulate bitcoin as his only strategy and he has an income of 2500$ and decides to allocate 10% to buying bitcoin weekly, so he buys at the first week at a price of 45,000$ and second week at 50,000, third week at 55,000$ and finally at 50,00$, he ends up buying at an average price of 50,000$ and accumulates a total of 0.05 bitcoin for his first month for an uptrend market.
Let say the same allocation with an down trend market of 49,000$, 45,000$, 40,000$ and 39,000$ price at each buying interval, he ends up accumulating a total 0.0578 bitcoin at an average price of 43,250.
i doubt that buying using DCA method is an automated system that auto buys the Bitcoin on a fixed week, month or year regardless of the rise in the price of bitcoin.
Technically, the DCA method may not be an automatic system but in reality it is supposed to be approached as automatic system if you have to be effective in it's implementation. In other words, effective DCA should be that you buy the planned amount of Bitcoin at the appointed time irrespective of the price or anything, this is somewhat automatic even though you may not be using bot or automated systems to achieve it. So, until the terms of the DCA is adjusted like increasing the DCA amount or shifting from monthly to weekly or bi-weekly, the DCA implementation should take an automatic approach.
Even if I'm using the DCA method to buying my bitcoin and after the first purchase I notice an increase and then another increase that Is way higher that the first price I bought my first Bitcoin, from a personal point of view, I would rather sell my holdings at the peak of the price rather than buying at that price. Their are range of price that if you buy at such price, you are very certain to have a loss or to hold your bitcoin for a very long time if you want to gain anything you of your investment.
Even though I'm struggling to understand what you are saying, I think what you are doing is not DCA instead you are trading... buying low to sell high. Besides, how do you know with certainty the peaks that you have to liquidate your assets? This method you posted may sound very convincing for your fellow traders and not long term investors. Like @JayJuanGee replied someone, you don't have to call trading investment.