BookBox has many suitable stories of an ideal length. They have been translated in sentence by sentences into many languages. I ‘shuffle’ those sentences. Then I listen and read.
At the start it feels like trying to churn water into cheese. Nothing seems to be happening. But after a while you find that a whole lot of things are beginning to stick. The trick is not to force it to happen how you want.
I know why it should work. I believe that it will. I’m happy not to ‘study’ the language. I am patient, and I love to experiment.