Unfortunately for Ukrainian efforts they're going to have to pivot to an even more mobile strategy as Russia increases bombardment. So pretty much all Ukrainian emplacements will become semi permissive and all ground troops are going to be sleeping in non permissive environments. I cannot imagine the toll of having to sleep through shelling, then ruck a few kilometers to bivouac, only to be shelled again.
I really hope the Ukrainians can get better air support and run sorties where these russian guns are. Because unfortunately, they cannot rely on a consistent supply of shells from the west. Slava Ukraini.