Anthtopic should write a post on token efficiency. Since trimming bad skills, mcps and diligently using clear compact (retaining tasks in md files) my usage is ~5x lower and i rarely hit limits - no longer even multi-account.
If you're running Claude Code in the terminal, scroll down a bit after running /usage and you should see a detailed breakdown of the specific skills, MCPs, and plugins using up your tokens. Most often, it's a bad plugin that's causing the issue