Of course DCA can be done only if you have a steady source of income or money. I think the best time to do DCA is when the market is falling, because where you buy, if the price goes down from there, you have the opportunity to buy more.So along with money, a suitable market is also very important. Bitcoin price also plays a very important role in DCA
There is no denying that money is necessary to do DCA, whether you have a large amount or weekly or monthly it doesn't matter. You can take advantage of DCA only when you have the opportunity to make frequent purchases at lower prices.
Let us be a little more comfortable in investing bitcoin with the DCA method, you must have an emergency fund of at least 3-6 months to cover your life for the future, of course the source of monthly income must exist, the cost of living expenses has been determined, DCA how many percent must be spent then this cash flow must be properly organized as discipline in carrying out the DCA strategy to remain consistent.
DCA does not have to wait for prices to fall because DCA is moving forward with years of travel, whether prices fall or rise if you remain consistent it will continue to enter into DCA in any price condition, if waiting for a decline or in bearish times then do what is called DIP or purchase at once, but most of the lower majority do not do that and they are comfortable with the DCA method even if it is $20 per week.
Maybe in the DCA level you can do more aggressively by increasing the percentage every week or month, if in an unstable cash flow situation then you can minimize the important thing is that you can increase according to your ability.