1) Cut dialog to the bone.
NOPE!
People don't edit their own dialogue. Conversations are not nicely trimmed exchanges between people who think out what they say before they say it.
If you want to have real dialogue, it has to be verbose and natural sounding.
You cut it down, and it stops working for the reader.
"Jon?"
"Jane?"
"Some idiot wants the author to cut our dialogue back to the bone."
"What bone?"
"I've no idea."
"Then why mention it?"
"Sometimes I wonder why I do."
"I do to. And you keep talking about the author in the present tense when he's been dead for six hundred years."
"Dead to you maybe."
"Jane?"
"Jon?"
"Are you on something I don't know about?"
"It's called life, Jon. Get one."