Another thing for me and I think the best approach to accumulation is to allocate 20% to bitcoin, keep 20% as an emergency fund for things that might happen unexpectedly, and the remaining 60% to make ends meet.
Imo i believe the optimum allocation is subjective based on individuals income, country, goal, and attitude towards risk.
The DCA amount allocated for the month
I guess doesn't have to be once a month but could be spread across the days in a month especially during a correction or dip.
Buying daily could be a burden and therefore difficult to implement. If the purchase is made on centralized exchanges, consider the withdrawal fees which is expected to be made daily, that a lone can become a big amount of money when you check it in a month time of daily withdrawals. Remember that it is not advisable to store your asset in CEX due to the risk associated to them. That means the only option will be to withdrawal daily or at least regularly. Similarly, if buying through decentralized exchanges like Bisq, there is still the transaction fees which will not go away.
Apart from the withdrawal and transaction fees, buying daily will be time consuming and there is the tendency of getting tired after some times.
Therefore, I am not supporting daily DCA. The weekly or monthly DCA is fine and gives one enough space to plan well in terms of the finance and time needed to implement the plans.