David Marquez variant for Spectacular Spider-Men #1
https://www.marvel.com/articles/comi...-david-marquez
So Miles officially got de-aged to 16 years old or Weisman isn't being literal with ages. If his age isn't mentioned in-story I guess it could be easily ignored.
And I'm still not sold on this student-mentor relationship they've been trying to push with Miles and Peter lately.