I'll answer you 1st two questions with short answers.

1) I don't know what tutorial that person read, but if you put a conscious effort into it, most likely you'll come out of whatever stat. Experience the transition passively. So you're right about letting it flow.

2) It's recommended that you sleep 5-6 hours before attempting WILD. And yes, the body goes to sleep while your mind stays awake.

About that thread you read with that member that said you need to put a lot of conscious effort into it; Can you post a link? I want to see it for myself.