On Instagram, a great way to track key influencers and brand advocates to ensure you’re engaging with their content is to:

Turn on Post Notifications" is the most efficient and direct method within Instagram to ensure you see content from specific accounts. When enabled, you receive an alert every time that user posts, allowing you to engage promptly. Adding an Instagram widget to an RSS feed is not a standard or effective way to track individual user activity on Instagram. Setting up private lists is not an Instagram feature; it's common on platforms like Twitter but not Instagram. Starting a Notes document to manually track handles and visit profiles is highly inefficient and prone to missing content, as it relies on manual effort rather than automated notifications.