Was it possible for the Soviets to invade Hokkaido before operation Olympic, the invasion of Kyushu, set to begin in November 1945 by the Americans?

The Japanese only had 5 divisions on Hokkaido, and about 170 aircraft, on the other hand the Russian amphibious capabilities were limited.

Its naval forces by August 1945, the Pacific Fleet, had 2 cruisers, 1 flagship, 10 destroyers, 2 torpedo boats, 19 patrol boats, 78 submarines, 10 mine layers, 52 minesweepers, 49 “MO” boats, 204 motor torpedo boats, 1459 battle planes.