Bluing is a controlled form of rusting. Rust remover will remove bluing.
As the man said, a good cold blue- PROPERLY APPLIED- can help control rusting.
Leave the Turtle Wax on the turtle. Some CLP on a rag, wipe it down once a week. Do not cover gun in goop unless you plan to store it 20 years.
Keep rag in a screw cap jar, put it back when you finish with it.
I carried a blued S&W for work. Got rained on, snowed on, etc. Do not leave gun in a leather holster (especially if damp) wipe it down with good oil now and again. Turned that one in 6 yrs after I got it- daily wear, still looked good.