I don't see Putin backing down now no matter what happens over the course of the next few months, years.It is difficult to say what Putin would do if Ukraine pushed Russia out of Ukraine. He has shown himself to be a ruthless and unpredictable leader, and it is possible that he would lash out in anger and frustration. He could also try to escalate the conflict by using chemical or biological weapons, or by launching a nuclear attack. However, it is also possible that he would back down and accept defeat.
Ultimately, Putin's decision would depend on a number of factors, including the extent of the Ukrainian victory, the level of international pressure, and his own personal calculations.
Just don't see it, and don't see it ended well for anyone.
It's not ended well for far too many souls already right?
No way he is going to back down now, in my opinion at least.