It’s absolutely possible. I don’t have have up to the minute reports, and I don’t think anybody in the west has access to the thoughts of Russian military leadership.
My impression though is that it is a quite uneven military trade to put so many resources into an attack like this just to divert protection away from the frontlines, and then not really leverage that by hitting the lines. Maybe it’s coming later after goading Ukraine into permanently sending resources to civilian areas. I do not know.
I have suspicions on what else it may be, but it is mere wild speculation.