Last season, the system was released in Aug and the season ended in Nov. So the honors system was tunned for the 3 months duration.
It is no suprise that it will take longer for you to move up in honors this season, afterall, the season is longer.
If you've played 300 hrs and still not progressing in honors, you might be getting validly reported. When that happens, it puts your honors progress to a screeching halt. This include things for minor toxicity like asking / threatening for reports or having a defeatist attitude.
Getting team honor bonus helps you with the honor progress as well. Winning a game is a team effort, so is climbing in honors. So make sure you honor someone at the end of the game.