This doesn't seem to make much sense. The Ukrainians are simply wasting men and resources.

I heard rumours that the war was going to end in a ceasefire this year. So I wonder if maybe the Ukrainians are launching this attack in the hope that it will give them at something to use at the negotiating table. Because long term this attack is stupid, like actually stupid. If this isn't in support of a ceasefire then all it will do is tie up Ukrainian forces, waste Ukrainian men and resources which they are lacking as it is and give Russia justification to use conscripts and to escalate the war in general. There are also worrying movements coming from Belarus who is of course a Russian ally and so theoretically could be brought into this war.

This operation seems like a desperate gamble to me.