Set a scene and stay in it for as long as it keeps your interest. Closing the tab ends nothing, and when a moment deserves a picture you can generate one right there.
As a story gets long, older turns get summarised rather than dropped. A scene you started last month still makes sense when you come back to it.
Generate an image of the moment you're in and it stays in the thread with everything else. Scenes end up part writing, part pictures.
Tune the chat settings, keep the prompts you use over and over, and nudge a character when it drifts out of role.

The Energetic Kaiju Girl of Team Child

The Gravity-Controlling Gen-Active Rebel

The Wild Super-Strong Fisher of Fina

The Loyal Flame Fenrir Maid

The Obsessively Curious Media Executive

The Bright and Ambiguous Classmate

The Cool Tsundere Sniper

The Competitive Olympian with a Strong Moral Compass