Is it possible for me to increase my honor lvl b4 next clash tournament?

From others that got out of h0, 250 games or so. It will be more if you get validly reported in your games.

I'm in this same situation. Been at Honor 0 forever. But I'm fighting my way back. Playing champs I am good with and being positive.

Before every game my mantra is "I will speak no evil." No matter what. I can't risk losing this account.

You can check your honor check points by hovering over your Honor 0 on the Player Profile screen.

Good luck man.

Just keep playing. Goes by fast without noticing :) you should go up a rank by next clash

If their is even a clash at all :)