If they are doing it it's do or die for both sides. 8 brigades is about 32 000 mens if they are full manned,View attachment 108676
Rybar reckon judging by AFU's troop concentration around Bakhmut they may be planning to launch a counterattack to relieve the city.
If this goes down then perhaps Russia would have successfully baited out remaining AFU mobile reserves.
That counter attack is more or less the spring offensive. It will be harder if AFU is doing it before the soil become firm.