That's a P2 re-release, not a Mini. According to the Tama wiki for the originals (https://tamagotchi.fandom.com/wiki/Tamagotchi_(1996_Pet)), it states: 'It will evolve into a teen at the age of 3, and into an adult by the age of 6.' Yours being age 8 and not an adult yet is quite weird. Have you...