No time is more better to start accumulating Bitcoin I'm always of the opinion that when ever you think you have the finance to invest on Bitcoin you do it without thinking of a good time because there's no good time in investing on Bitcoin.
There is actually a better time I would say. Yes, I agree that it’s best you do invest when you’ve got the money to buy just that fraction that would top your portfolio but even then, having to buy at a low presents the idea of having invested at a better time than buying when Bitcoin price is high.
From my view, there's no better time... maybe you mean the word "Advantage" and AFAIK buying Bitcoin is an advantage itself .
However, buying the dips gives a "BetterAdvantage" to investing in BTC, I wouldn't really support the word "better time" that's why your post was misterpreted by @Smilevictorobinna, although you added "it's best you invest when you’ve got the money to buy" which is a good one and in addition when you have little to spare in an interval breaking your investment to increase your holdings could be done as little ca. Still be invested out of that little on a regular intervals which is simply the DCA strategy which gives and with this having to think of a better time can be completely scrapped