As a member of Yoda's species, Grogu ages differently than the other characters in The Mandalorian, making it difficult to tell how old he is in each season. Yoda lived to be 900 years old before passing in the original Star Wars trilogy, and Grogu was already older than Din Djarin at the start of The Mandalorian, so any biological growth would be almost imperceptible. However, there is some evidence to suggest Grogu's age throughout The Mandalorian and The Book of Boba Fett, as well as how much time passes between seasons.
from Screen Rant https://ift.tt/ZtkPUJY