If this is anywhere close to true... Modern intelligence reports should be largely confirmed with video footage from the ground and drones backing up commanders reports along with satellite and other data obtained from the enemy by electronic means and prisoners.
A big increase in Russian dead and artillery pieces destroyed along with other pieces of ground equipment, it indicates movement to me, getting through most of the Russian defenses and mine fields then encountering reserve forces on open ground in the Russian rear or from captured defenses. The war is entering a mobile phase I think where armored maneuver, training, communications and superior tactics will play a bigger role. Russian artillery is getting hammered, and those boys must be getting gun shy. Project artillery losses ahead for a month or back a bit and you'll come close to 1000 Russian guns lost a month, according to these figures. As soon as they fire a round at the Ukrainians, the counterbattery radars linked to the highly accurate 155mm guns swat them while the drones watch overhead to make sure they are dead or correct fire until they are.