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Is it possible to have a dream where you think you are Lucid.. like that is your dream.. thinking you're Lucid dreaming?
That's an interesting thought, but I'm pretty sure you had a real lucid dream. Congratulations ! And welcome to dreamviews
You could, but it doesn't sound like yours was. You would know if you had a dream where you dreamed you were lucid.

Switching settings 5 times is too much if it's one of your first LDs. To sustain the dream you need to focus on something and stay in one place. Only when you're sure you are not going to wake up should you change settings or do anything drastic like flying. Can't tell you how many times I forget to stablize only to wake up when I try to fly.