Putin's organ. Russian Rocket Artillery Reserves [ANALYSIS]

Russian rocket artillery was the kind of armament that inflicted crucial losses on the Ukrainian defenders, starting from the very beginning of the invasion. This happened primarily due to the outnumbered and qualitative superiority over Ukrainian counterparts, which was mainly visible in the first phase of the war. How did the reserves of this kind of equipment in the Russian Federation then look like? Like tanks or barreled artillery, can the Russians have specified crucial reserves for the next months of fighting?