This question is not about the law itself, but about interacting with lawyers in a way to minimize the legal bill. Are questions like that something that we want to consider on-topic here? I don't think they should be; they're not directly about the law (the topic of this site), and while someone with legal issues needs to deal with lawyers, minimizing the bill doesn't really have anything to do with any legal aspects of the situation.
Something like "what happens if a client runs out of money mid-case" actually has legal aspects (because there are ethical obligations on lawyers, which have to do directly with the law). But "how do I minimize billable hours" would apply just as well to a management consultant.