The great thing about CI is that it implies less is more. Don't do anything elaborate, don't memorize, don't practice grammar, just consume media you understand.

I'm at a somewhat intermediate level, so mainly I am just watching The Mandalorian, Clone Wars, etc, in Spanish with Spanish subtitles. I'll often repeat a phrase or sentence into Google Translate, or repeat it into ChatGPT mobile and ask for a grammatical explanation or if the phrase is colloquial.

I do copy transcribed phrases I like, so I can read them again later. That's all the review I do and is more than necessary.

I've also signed up for News in Slow Spanish but not sure how much that adds over watching TV tbh.

In a few months I'll think about adding conversational practice in some way.