If he would restart the war, why is he pushing for peace talks?

The war is both going worse than people expected it to go for him, and Russia is also making progress.

Stopping the war, then restarting it risks a restarting of the war being impossible due to Ukraine signing security treaties with NATO members, and Ukraine building it’s army up as a result of this war. Furthermore, given rolling the “invade Ukraine dice” went worse for Russia the first time than expected, why would they, or any similarly inclined nation, do it?