October revolution still happens in my TL, the pod is at the battle of Kazan in late August/early September 1918.
As a matter of foreign policy, Russia has just gone gone through two revolutions and a Civil War. The SRs are trying to salvage whatever credit Russia has on the diplomatic scene so it aligns generally with the other Entente powers or just look the other way, for now.
In Turkey, they are content with the neutral status of the straits that open a free and secure trade route, and that's all, focused as they are on consolidation and reconstruction, just keeping out of the fray. Russia doesn't deem the Nationalists worth spending whatever few diplomatic capital they still have, while the question of borders and relations with newly independent neighbors on its western frontier, along the subject of Japanese occupation of Vladivostok, are on top of the day's priorities.
A significant event I think is unavoidable, despite official anti imperialist discourse, is the invasion of Azerbaijan, primarily motivated by the need to control Baku oil fields (strategically, Russia can't afford to let them go) , so they will find a justification or another just as the Soviets did, but that move would make Turkish Nationalists very nervous about attacking Armenia there.
Turkey won't lose more than the Smyrna enclave originally granted to Greece in the treaty of Sèvres, plus eventual minor corrections for strategic security purposes. Turkey resistance did already compell IOTL a revision of Sèvres treaty with an attempt to give more lenient terms, though far from the complete repeal of Lausanne. So there would be pressure on Greece not to push too far, keeping in mind that given the geopolitical stakes, any revised peace treaty will have to include all the major powers, taking it out from sole Greek hands.