All the expert opinions I’ve seen have reduced the situation in the east to a stalemate and possible Ukrainian regains in the south. Also, with how much I hear about Ukrainians being very disorganized at the start and with the further lack of any weapons apart from their own, it’s odd to claim the Ukrainian army was at its peak. The Russians seemed to have simply failed miserably trying to take over the entire country quickly.
From what I’ve seen, apart from Snake Island, they’ve made small gains at the very edges of the battle line but lost a City at the heart of the eastern battle. From what I’ve read, they’re trying to form a bigger counteroffensive right now and have been urging Ukrainians to evacuate from occupied territories before the real battles commence as it’ll get ugly. They’re also getting another big batch of tanks from Poland.