Yes - but once the sanctions are lifted - when Russia break the ceasefire, will the US put the sanctions back on again. Doubt it.Maybe Ukraine should go with this, because it does, genuinely, want peace. Maybe it hopes and believes that the pros of the ceasefire outweigh the cons.
But I think the decision of Ukraine to accept this ceasefire is about the axis of time. A 30 day ceasefire favours Ukraine, not Russia, because it pushes the actual ceasefire (if it happens) further out into the future. But Russia needs this ceasefire, now. It needs the money from trade. Beyond the usual Russian bravado, it is in real trouble, both militarily and economically. 900,000 casualties is unsustainable, and extremely dangerous for the stability of post-war Russia.
By accepting a ceasefire, Ukraine is staying onside. Russia is nailed on to be offside in every attack. Ukraine will of course have a plan for when Russia breaks the ceasefire.
Finally, we are only nine weeks away from June, the month that Mark the economist has predicted the economic collapse of Russia.