Baby Yoda and Elves

 I love Baby Yoda as much as everyone, but I can’t help but find the concept of being a Baby who can’t even speak yet for over 50 years kind of bizarre, and I’ve seen similar tropes done with the aging process of some Anime Elves.  I remember thinking a more serious world builder would just explain how their very long lived race matures to adulthood at about the same timespan humans do and then their aging slows down dramatically.  

But then I learned that in some of Tolkien's more obscure writings it’s clarified his Elves were also envisioned as taking like 100 years to become adults.  

The growing that we humans experience for the first 25 years of our lives and the decaying that defines the rest of it are very different biological phenomena, that both can be described as “aging” doesn’t make them the same thing.  So the later being massively slowed or even frozen for a fantasy race doesn’t inherently mean the former has to be slowed as well.

So any Elves in a story written by me would grow up perfectly normally.