The only time you should change strategy is when you notice you are no longer comfortable with that strategy or the strategy is not giving you the desired result needed, a lot of people started Bitcoin investment by accumulating only during the dip I was among this set of people but when I saw the DCA strategy and how it works I preferred it to the other I was using because the former didn't give me the result I needed it slowed down my accumulation, so go for the strategy you feel will give you your desired result and abandon any strategy that is slowing you down.
It seems very contradictory in the accumulation journey if we just started investing in bitcoin with DCA strategy and quickly switch to another strategy then such a decision will make you inconsistent throughout the long-term accumulation planning.
If we just started investing in bitcoin then we must be able to maintain initial strategy until the next 5 years and after that we can change the strategy that may be more aggressive or buy dips.
For that, the initial stages of investment require a lot of patience, mental readiness and readiness to stick with one strategy in order to increase our focus on buying bitcoin.