I'd be surprised if they lost anything at all anywhere but a bit more of Bakhmut. There's chatter about another big Russian "offensive" about to start, but we're on our what how? 5th of those with little change in the macro.
The biggest macro change likely coming in the next 8 weeks is the Svatove-Kreminna front imo, where Ukraine has been making small incremental gains over the last 3-4 weeks (took another strategic point necessary to squeeze the Russians out of Svatove last week and most war maps I've seen lately have 1-2km outside of Kreminna as "contested" now).
Bakhmut really serves no strategic purpose at all, if the Ukies fall back from that...meh. There's a bunch of forest, small rivers and rolling hills to the north. Lots of places to set up a defensive line and losing Bakhmut kind of does...nothing. It's a political target, not a military target. Wagner/Prigozhin giving the middle finger to the military establishment. Losing Svatove and Kreminna though makes the Russian defensive line in Luhansk untenable, puts the most important logistics hub north of Luhansk in direct jeopardy and causes a massive reset of about 150km of Russian defensive line unless they want to get flanked. Puts retaking SEV on the menu more or less immediately and probably triggers another one of those Russian major backwards advances up there that we grew so fond of.