The rules for Juvenile Creatures (FaD Core) say to reduce WT, ST, and Damage to half the original value, rounding up, and reducing the Silhouette by 1. OK, so far so good.
For thought, should the following change be considered too?
Reduce Soak to half the original value, rounding up.
Rationale: Creatures with very high Soak (10+), the juveniles are still too hard to hurt if they retain the full Soak of the adult.
I'm also considering if the juvenile should have reduced Defense and/or Adversary ranks. It's also somewhat odd that they have the same Brawn & Brawl ratings as the adult, meaning they are just as accurate in combat even if the damage is significantly lower.