How can Eevee evolve into Sylveon? And, how do I give the other Eevee high happiness to evolve into Umbreon? Thanks :D
Sylveon you must get at least 3 hearts of affectshion in Pokemon amie and then level evee up.And it has to know a fairy move.
Umbreon to get high happiness you make sure your evee does not faint and give it a sooth bell while you level it up.
Hope I helped :D
to sylveon you need to max out eevee poke-amie stats and (maybe) learn a fairy type then lvl up
Since you can catch them in the wild, I suggest using a Luxury Ball on the Eevee you plan to evolve into Umbreon.