And Ukraine still hasn’t brought out its fresh reserves for its counter offensive yet.
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Mostly because the UA has no arms or kit to give them. Best the UA can do is Maxim machine guns from WWI, Soviet era DP-27 machine guns, Enfield rifles, and Soviet WWII helmets. Ammo is very low, fuel is scarce and many bridges are destroyed, along with many locomotives - rail is the quickest and most efficient way to move across Ukraine.
This is literally the situation in Russia per a large number of reports from the field from Russkies themselves. They are being sent in with WW2 guns and helmets from 1941.
Ukraine has received 200 tanks from Poland alone just recently, plus other shipments from Estonia, Czechoslovakia, etc., along with large supplies of brand new western weapons, including one shipment of 40,000 155mm artillery shells, which is now expanding to more than 100,000 shells. Not to mention large numbers of new Javelins and other aarms. They've also captured hundreds of Russian armor, which has been repaired and recirculated for Ukrainian use.
It is suspected the new US Howitzers are responsible for the sudden defeat of Russia's front in Kharkiv. They are currently fleeing across the border.
The common consensus that I have seen is that Ukraine is currently preparing its reserves with these new western weapons and will in preparation for a large offensive. The counter offensives going on in Kharkiv and other regions are being done by the initiative of local commanders and is just the beginning of trouble for the Orcs and Goblins of Mordor.