Well, the war is about an existential threat to Russia, so they will do the fighting whatever it takes.
It just seems that they have taken the best strategic route that has allowed them to minimize casualties while methodically disarming NATO as a whole and while also avoiding excessively fast escalation, which is a major consideration in this nuclear armed world, see Iran-Israel.
I think that it is thanks to the experience of the SMO that Iran decided to go the way of attrition in its own war against the Zionist entity. It has proven effective to today's war doctrine of the West.
So, as I understood, Turkey and the gulf states were OK with the Julani comprador state if it meant stability in the region and kicking Iran out.
I can't imagine they are too happy at the destabilization taking place in Syria. Will they spring into action?