I found it was better to just get all the docs sorted. It took up an evening, but it was worth it. From filing N400 to citizenship, I was done in 3 months.
The interview itself was straight forward as the Officer already had everything to hand. I took copies of literally everything just in case, but didn’t even open my folder in the end.
Obviously every case is different, but I have friends who applied before me with bare minimum, and they’re still waiting.