^Level your Eevee's a bit, you'll be fine. Although I think you can find a Fire Stone on Route 4 with the Dowsing Machine if that's necessary for you.
Anyway, I beat 3 more gyms today on Black 2 (Challenge Mode), including my personal favorite, Elesa's gym~~. Ever since I played White 2 in Japanese, I've fallen head over heels for Elesa (figuratively hahah).
So now I have 5 badges. I'm currently exploring Relic Path.
-Boyardee the Emboar lv 37
-Egoist the Roselia lv 36
-Kira the *shiny* Pidgeot lv 36
-Staryu *shiny* lv 37
It's gonna be a while until I get my next team member: Vibrava.