Looks like they are making more progress in the south, they took the rest of Meltipol and are moving on. I made this map.

Looking at the area there does not seem to be many large urban areas in the lines of advance I marked(Dark Green) and as it's Ukraine it should be fairly open so it may be not so difficult for them to make progress here. If they do that puts the Ukrainian forces in Donbass and Mariupol in danger of being cut of. If they manage to take Kharkiv they might even cut them all off.