Just remember how Kharkiv oblast was liberated in September 2022. Ukraine made some progress in the weeks before, which put enough pressure on the Russian occupiers to make the continued occupation untenable, so they had to pull back into Luhansk.

Something similar could easily happen here, all it needs is a cirumvention of the defense fortifications to push far enough to disrupt e.g. the supply lines between Donetsk and Crimea, and significant parts of the occupation could crumble quickly.