The Baltic Sea is pretty much a NATO lake anymore. All the bordering countries are purchasing anti-ship missiles because of Russia's invasion of its neighbor Ukraine. Once these missiles are in place Russian ships in Kaliningrad won't stand a chance in an actual fight and would likely be sunk in port if hostilities ever really happened. But I am sure that is all part of barbos' plan. We'll probably see these ships redeployed somewhere else closer to Russia in the future
What would Russia need Baltic fleet for?
Baltic Sea and Black sea are lakes that nobody would be able to use for anything.
NATO can destroy everything there and so can Russia.
If freaking Houthis pretty much closed the sea nearby then Russia can do that with ease.