Title says it all, and I know that during the middle of the night REM sessions are closer, but how close, and when I do a WBTB is it a problem if I awake during a REM session and/or after it. Because they say it is better to awake before one

I also had my first lucid dream and I noticed after my WBTB after I went to sleep I entered the dream SO QUICK like 5-10 minutes, will it be longer if i awake during or after a REM session???