Using a basic analysis on the bottom (lows) at each all time high, gives a very good projection/indication of the lowest price range of BTC in each following bear market.
Projecting the above theory to the December 2017 bubble, we can project that the BTC bottom will be around the $1350 price (ranging between $950 and $1755) within the March-May 2019 window.
My best guess is a quick shot down to the $1350 target from the $3k levels sometime in late Feb/early March, followed by a swift U-shaped recovery back to the $3k levels in April to begin the new consolidation phase & Bull market...
The idea I'm showcasing is simple with those arrows and text:
I'm show casing that the lowest point of the bollinger bands at each BTC bubble top, corresponds (approximately) to the lowest BTC point of the subsequent bear market.
So, expect a final & quick capitulation to the $1k-$1.5k levels sometime in the coming 2-3 months... the market will find its bottom there, and then head straight back up to the $3k-$4k levels (U-shaped recovery).
Hope this helpful.
It’s mainly an educated guesstimate, taking the total lengths of previous BTC bear markets as well as final capitulation candles at the very end of each bear market. So, yeah, a guess with some theory based on historical timeframes.