PRAW too many requests

Hello, Im trying to use praw for fetching all comments from a specific submission (15k comments), using this code:

submission = reddit.submission(url=url)

submission.comments.replace_more(limit=None)

for comment in submission.comments.list():

body = comment.body

date = comment.created

Basically is the same as it shows in the documentation.

The problem is that is VERY slow and I keep getting the "Too many requests"

How do you tackle this issue? using praw or direct reddit api, I just need answers please im desperate

PD: The code works when the submission doesnt have too many comments.