Need to know how to check if GI has been "loaded/active" on a rederer

I have a door system that turns off mesh renders in rooms not visible, the problem is that right now im checking to see if the Renderer is Enabled before allowing the door to open so the player does not see a transition.

The problem is that it appears the LightMap Realtime GI is loading slow, meaning the render enables and the player sees the next room but the RealTime GI is loading late and I don't want the player to see that.

Is there a way I can also check if the realtime GI has also been actviated and is running on a specific Mesh Renderer?

Thanks,
Johnny