As the other person mentioned, maybe you should reconsider the way you organise your writing.
If you cannot hold down plotlines while you’re just writing off the top of your head, you could try doing more planning and mapping out your plot.
If you don’t mind the mess, and prefer physical/tactile notes, stuff like the post its the other user mentioned, or something like a cork board could probably be good.
If you prefer to be super organised and don’t mind digital notes, there’s a lot of free to use organisation/notes apps, I really like Obsidian.
As the other person mentioned, maybe you should reconsider the way you organise your writing.
If you cannot hold down plotlines while you’re just writing off the top of your head, you could try doing more planning and mapping out your plot.
If you don’t mind the mess, and prefer physical/tactile notes, stuff like the post its the other user mentioned, or something like a cork board could probably be good.
If you prefer to be super organised and don’t mind digital notes, there’s a lot of free to use organisation/notes apps, I really like Obsidian.