Many effects took place. That said I think you’re wrong about the speed of the effects. There were quick and sizeable effects. However Russia simply reshuffled the economy. Russia, or any country, doesn’t need to export or import anything if they’re self sufficient. They can replace the lost income from those exports with public investment into something else. For example military production and soldiers. And that’s what they did. Now Russia isn’t self sufficient but China has filled the gap for their high tech import needs and is taking Russian fossil fuels in exchange. So is India. Given that Russia has both markets for its export and sources for its necessary imports, I don’t believe there’s any further effects from sanctions we could expect. That’s how I read the tea leaves anyway.
I meant they are not self-sufficient in tech but they can fulfill those needs by importing from China and India.