While the US has been the largest patron, they aren't the only one...and Ukraine isn't our whore.
It's their country - we can carrot & stick all day to compel, but it's still their decision. Those measures are working, as Zelenskyy already (somewhat) walked it back - various reports of some willingness to enter talks with Russia - on Ukraine terms (possibly a post-Putin Russia).
https://www.politico.com/news/2022/11/08/zelenskyy-talks-with-russia-possible-on-ukraines-terms-00065624
At this point, if Russia stops fighting, the war is over. If Ukraine stops fighting, Ukraine is over (now or later). Aside from trying to provide off-ramps to Putin in an attempt to let him save face (won't work/matter), Ukraine going to negotiating table now is only beneficial to Russia.