Just by simply measuring the previous corrections in the stock market, it is clear that corrections in general do not take long. The average size corrections seems to be between 3 and 5 weeks.
The botom of the current correction is found in week 4. As the price is also holding a critical support level, the probability of this being the bottom is incredibly high.
With Bitcoin finding a bottomg as well (these two markets are correlated), I believe that this is the bottom of the current correction.