Bitcoin is hard to get started with. Once you've gotten at least some (you've gotten out of Bitcoin Zero balance #getoffzero), you might start to flirt with the idea of regularly saving into bitcoin. This is done by people who believe that bitcoin will pay off in the long run and are trying to minimize short-term price fluctuations by doing so.
But if you believe that bitcoin is worth holding for the long term, it's worth holding as much as you can, as soon as possible, and just don't risk exchanging it into fiat. Or switch into fiat divestment mode as quickly as possible (get to fiat zero #getonzero)
DCA also has dollar in its name 💩 → it just doesn't have a future...