I agree with others on this thread about good recall reducing the number of 3rd person dreams. They're rare for me now. So rare that seeing myself in a dream recently triggered lucidity for me. I saw myself in a theater. Then I told my self that's not me, I'm me. The other me disappeared and I took control of the dream for a couple of minutes.

If you dream in 3rd person often, it may be useful to tell yourself throughout the day and/or during meditation that if you se yourself, then you are dreaming.