As I've said before he appears to be on a path that is unsustainable. He is losing the war on the ground, would need significant up tick in men and material at great cost to change that. Even then its been a tactical disaster.
There is probably an elite of a few thousand in Russia who have value and influence. Everyone else is an expendable pleb. Change can come one of two ways. A great many plebs can rise up, or a significant few elites can rise up. Ideally both happen at the same time. But I don't see anything happening and I assume Putin works fairly hard to protect the interests of the elite. They may have distant friends and relatives involved but none will be closely connected to the war. But as the costs mount up Putin will struggle to hide the real impact. That is why I see it as unsustainable. Something must give at some point.
Russia is currently firing missiles at Belgorod,Russia.(yep,you read that right).