The idea is indeed better to make purchases weekly so that BTC will increase much faster, but the problem is when the cash flow is unstable and they do not have weekly capital to make purchases.
Why this reason can be justified because buying using the DCA pattern against BTC will be much more profitable because this asset will continue to get an increase moment for each period even though it cannot be separated from the correction process.
DCA is not appropriate if the asset purchased does not provide certainty like BTC so that the basic capital will be suppressed with a much lower selling price.
This is the reason why DCA is more suitable for BTC investment in my opinion.
I prefer weekly purchases because this increases the BTC owned, if this week does not buy BTC due to unstable cash flow then next week is double to make a purchase, I don't mind this being called aggressive in purchasing but I want BTC to keep accumulating every week.
Obviously the DCA purchase pattern is very profitable especially taking the average price - after I saw the purchase statistics for more than 2 years it showed significant growth even more than 100% but we still hold and continue to do DCA every week as a routine.
DCA will continue in any way, weekly - bi-weekly - or monthly, what is certain is that you must be sure that BTC will provide long-term benefits so in DCA it must be consistent.