There is a distinct possibility that in 10 years Putin will have died. He's been reported to have health issues. That's not to say his replacement won't be worse than what Russia has now for a leader. Even so, it will take time to make the politburo loyal to the new leader.
Putin has shown to be a sabre rattler with the nuclear weapons. I'm quite sure he's aware, just like Kim in North Korea, the first nuclear weapon to be used could well mean that countries leadership will no longer exist afterward. That's not a prospective winning hand. No one wins a nuclear war. To me it's telling that Putin uses the nuclear threat, knowing it's not winnable. It sounds to me that he's worried about other countries taking advantage of his low manpower for the military as well as his continual drain of weapons. When you issue your new troops WWII weapons and send them to war without full equipment, such as socks, it's telling.
While it's not a chance I'd like to take, I'm not all that sure their nuclear forces are any better than their other weapons of war. Putin has not only gone through his best troops in the Ukraine war, he's also gone through a lot of his most modern weapons. The causality rate has been a heck of a toll.
He's bleeding money to finance this war. His drop in income from the oil and gas he'd normally sell, has been substantial, having to sell it at below market prices in order to attract buyers with the sanctions in place.
The countries most current on their support of NATO (which doesn't have to be money, it can be troops or equipment of equivalent value) are strangely enough those bordering Russia. The further away from Russia the country is, the more in arrears they are. Approximately 35% are current.