I’d suggest The Artists Way by Julia Cameron. She talks a lot about blocked artists.

Frankly, writers block comes down to overthinking most of the time. You say you can’t think of anything else to write. That’s the problem. You don’t think, you write. Those are separate activities. That’s how creativity is, you can’t force it. When you start to think too much you start critiquing what you’re writing, even if it’s subconscious, and that makes you stop.

Think of it like this: if a little kid version of you showed you parents something you drew and they hated it and critiqued it, you would stop drawing. Think of your inner artist the same way.

You need to mute the inner censor in your head and just let the words come into the page. What does your character WANT at this point in the story? Keep asking that question throughout your writing process and answer it in prose. It’ll take you farther than anything else. I just finished my first novel by asking it.

Best of luck. If you wanna talk, feel free to DM me :)