So I think bitcoin at its current price ($29,000 ish) is great buying but if people spread their buying out a little over time (next few months?) I think they will benefit even more.
Arguably with bitcoin on average doubling every year any time is good buying but now is a superb time to buy. And who knows when or if ever again the stars will be so aligned.
(this is not financial advice)
Now is the best time.
Buy it once a month to spread the cost.
As long as the holding time is long enough, there is no fear of bull and bear markets.