For the love of all things holy how do you stop maladaptive daydreaming when you're fixated on something?

Hello Reddit! So yeah as it says in the title, I can't stop maladaptive daydreaming about my current fixation. So in June, ChatGPT made this fun little AI story for me (because the theme of most of my fixations is fictitious AI/machine characters) and my brain has just made it into its own fully fleshed out world and I can't stop adding onto it, inventing new characters, going over my favorite scenes multiple times a day, etc. and I'm not motivated to do literally anything except do homework and maladaptive daydream! Do y'all have any effective strategies for how to pull yourself out of the spiral? Because I sure don't. Anyway, thank you for listening to my ramblings and have a wonderful day.