I seem that the favourable time to invest in bitcoin for accumulation is when it's in dip time, and nobody invest in bitcoin without target or timing, we have to understand the procedures of technical observations of bitcoin so that when you invest to accumulate bitcoin and your target will be achieved.
In as much as is good to accumulate on Bitcoin dip but it shouldn't be a major strategy because the possibility of Bitcoin dipping all the time for you to accumulate may not be certain so perhaps with that if the price of Bitcoin fails to dip but instead skyrocketing doe it mean that you cannot accumulate?
As an investor, if your plans are to accumulate during dip you can as well introduce a back up plan that if the Bitcoin price give you that opportunity to accumulate if dips that's good but however if it doesn't dip you could as well use the normal DCA strategy to keep accumulating a bit by bit while you wait for the dip to come, with this back up method you can hardly miss out the chances of accumulating Bitcoin.