Instructions needed - Removing Chronological age/aligning it with biological

[Deer87]

Hi People

Im dabbeling a bit with a Firefly mod, but the concept af chronological age annoys me.
I get it in vanilla. And i understand the lore, so please, no discussion regarding where it makes sense or not.
In the Firefly universe, as well as other universes however, being 1000+ years old makes less sense and i woould therefore ask if anyone know how i can disable it? If i recall correctly, tribals don't have it, so it might be as simple as adding a certain tag or so, to my new factions and such.

But im no experienced programmer, All i know is a bit of reverse engineering, so i would hear if anyone know how it can be done?

Thx in advance