The Russian Army in the First Part of the War

The largest russian losses in the first part of the war were mostly due to ukranian airhating russia convoys. Since we haven't really heard much of it since then, it seems to have stopped existing as a relevant strategic force. From my understanding, the highest rate of casualtyis reached around 85 to 90 killed per day in that period of the war but has been going down steadily since then.