One way to solve this would be to give Putin a honorable way out. He might give up if the status of Ukraine is officially accorded as non NATO. Give him on paper what was promised in words in the 90s.
https://www.theguardian.com/commentisfree/2022/feb/23/obsess...
Is there consensus that the sanctions, as the west uses them, are having a positive effect?
Instead of sanctions, I think providing humanitarian visas would serve the situation better: you help expatriate citizens to countries better governed with superior economics, and you drain citizens from the offending nation, which is far more effective from a future productivity (which translates to economics over the long term) destruction approach.