Based on HUMINT and sat imagery, I independently confirmed the arrival of additional troops to the Baranovichi area. Satellite imagery shows that active preparations started after 14.10. Available data points to the gradual increase in Russian military presence in Belarus
Between 14.10 and 31.10 over ~150 tents were assembled. The number of fighting and logistics vehicles indicates the presence of one brigade-sized force
Due to insufficient resolution, I wasn't able to identify accurately all vehicles, however, it can be roughly estimated around 40-60 AFV, and 60-80 cargo trucks