Scraping Reddit

Has anyone here scraped a subreddit before? I’m having considerable difficulty crafting a crawl-config that scrapes a single subreddit (its main pages, its comments, and its posted links), without inadvertently scraping other subreddits.

My crawl config currently looks something like this:

combineWARC: true

seeds:
  - url: https://old.reddit.com/r/BrownU/
    scopeType: "prefix"
    extraHops: 1
    include:
      - https://old.reddit.com/r/BrownU/*
    exclude:
      - https://old.reddit.com/$