I don't think russia can hold the WW1 scenario, I managed to hold until 1916 (last 3 months with kerensky) but I think it's impossible to lower your dissent fastly enough to counter the one you will get by events and/or loses which doesn't help to keep your industry afloat or to lower the dissent. To hold until this date, I completly abandon poland, push on austria until it's impossible to get a 1 to 1 ratio on casualties and then stay on the defensive on fort as much as possible but even like this holding the line is not possible. After the fall of the ottoman, AI UK troops came to help but it was already too late.
But it's the same story as playing the french, as UK doesn't help you on the continent and you don't have enough manpower to grind the german. I loss once cause russia fell in late 1917 and even with the loss of austria (italy pushes extremely well in the alps), Germany kicked me. So even in an AI fight and with some french big push (cause controlled by me) russia is doomed.