Ukraine are still in the winter on their terrain but the upper hand geopolitically is turning more against Putin all the time.
Not least with his small remaining allies too. Ukraine basically need to reload and need ammo as pointed out here:
https://www.newsweek.com/ukraines-spring-success-hinges-solving-one-glaring-problem-1785166
NATO and surely many other warehouses in Europe can help with that.
Inexpensive quick win before tanks and more things arrive.