diff --git a/README.md b/README.md
index ca32e09bfb..51da6622c9 100644
--- a/README.md
+++ b/README.md
@@ -1864,6 +1864,11 @@ #### bilibili
 #### digitalconcerthall
 * `prefer_combined_hls`: Prefer extracting combined/pre-merged video and audio HLS formats. This will exclude 4K/HEVC video and lossless/FLAC audio formats, which are only available as split video/audio HLS formats
 
+#### mixchmovie
+
+* `max_comments`: Maximum number of comments to extract - default is `120`
+* `fetch_interval_sec`: Comment json files fetching interval. If `max_comments` is set too large, fetch interval need to be limit
+
 **Note**: These options may be changed/removed in the future without concern for backward compatibility
 
 <!-- MANPAGE: MOVE "INSTALLATION" SECTION HERE -->
diff --git a/yt_dlp/extractor/mixch.py b/yt_dlp/extractor/mixch.py
index 362a3e155a..f1b485a2b1 100644
--- a/yt_dlp/extractor/mixch.py
+++ b/yt_dlp/extractor/mixch.py
@@ -176,7 +176,7 @@ def _get_comments(self, video_id):
         COMMENTS_LIMIT = 20
         # If json files are downloaded too frequently, the server might ban all the access from your IP.
         comments_left = int_or_none(self._configuration_arg('max_comments', [''])[0]) or 120
-        json_fetch_interval = int_or_none(self._configuration_arg('json_fetch_interval', [''])[0])
+        fetch_interval_sec = int_or_none(self._configuration_arg('fetch_interval_sec', [''])[0])
 
         base_url = f'https://mixch.tv/api-web/movies/{video_id}/comments'
         has_next = True
@@ -197,8 +197,8 @@ def _get_comments(self, video_id):
                 'timestamp': ('created', {int_or_none}),
             }))
 
-            if json_fetch_interval:
-                self._sleep(json_fetch_interval, video_id)
+            if fetch_interval_sec:
+                self._sleep(fetch_interval_sec, video_id)
 
             has_next = traverse_obj(data, ('hasNext'), {bool_or_none})
             next_cursor = traverse_obj(data, ('nextCursor'), {str_or_none})