hey guys, so i'm playing platinum at the moment, and i just finished the pokemon league. i'm now just trying to get the national Dex by completeing the Sinnoh dex.

one of the pokemon i haven't seen yet i need to see in order to fill the dex is Umbreon.

what are some fast ways to get eevee to a high enough friendship level in order to evolve it into an umbreon /vp/?