The ideal time to run a DCA strategy is when an investor has a consistent cash inflow or outflow, and at that point, they can run the strategy for as long as they want, up to several years, with any weekly investment amount.
Without a reliable source of income, I doubt someone would invest in bitcoin on a weekly or monthly basis, much less being consistent over a year, if that were the case.
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.