Russian tactics have changed dramatically and officers in particular have gotten increasingly more afraid of getting killed by leading from the front and being in HIMARS range. You can literally tell when HIMARS strikes hit officer concentrations (HQ buildings mostly) by the peaks in July and August.

More specifically, for the last few months (at least on some 50km of front line), Russian troops are sent (~10 at a time) on mindless assaults to locate Ukrainian positions and relay the information to artillery. They repeat the operation once artillery need more targets or to validate if the last shelling was effective.

All of this is widely reported by Russian troops on the ground.