Is it possible to monitor someone's activity if you log into someone's instagram on your device?

Hey everyone, I’m trying to keep tabs on my kid’s Instagram. If I log into their account on my device, can I see all their DMs, stories, and posts? Just wondering if that’s enough to monitor their activity or if there are other methods.

Logging in directly can work, but it often sends a “new device login” notification to the user, which isn’t very discrete. For stealthier monitoring, an app is a better bet. I use Parentaler to track Instagram activity, including DMs and stories, without needing to log in to my kid’s account.