The M2 monetary aggregate remained at the long-term average of 14%.
This does not allow the Central Bank to significantly reduce its key rate. 
But 0.5% in December is quite possible.

The volume of cash outside banks has now stopped growing, which is also a good sign for the key rate.

Currently, budget expenditures, along with inflation, have a certain downward trend, which creates an opportunity to reduce the Central Bank's key rate.