If you think that a month is already a long time for bitcoin to recovger, you seriously should look at how long it took for bitcoin's price to jump from $200-$500 in Q1 2014 - Q2 2016. It's an obvious longer time for the price to jump, every month is worthwhile and helped a lot of people (including me, lol) to accumulate bitcoin before it rose heavily starting February of 2017
Bitcoin has a long past, so I would go in that long detail.
BTC reached $5 k to $20 k in less than 3 months (Oct to Dec' 17) and this is the biggest drop and longest time taken to recover in last one year. So, I was referring to this one year period.