Based on my light research, Reincarnated People are initially unaware they are reincarnated, only realizing it after past memories emerge. However, if you are fully aware that you are reincarnated the moment after your birth, it's best to let everyone know as soon as possible. The first chance you get to draw with paper, write down your real name and the fact you were reincarnated on it, preferably in sight of an adult. If the adult's are smart, they'll realize your a child genius. If they're those retarded ones from the Matilda Movie and don't care, consider waiting until you can talk and call child protective services.