Also another trick (without going full formaliser spaced repetition): reread the same thing the next day, and then a week after. Boring but very effective for long term retention.
I would argue you better practice recall than rereading, i.e. put some notes after reading, make an abstract, expand on it with new thoughts next day, in a week etc.
Just rereading might be a) boring b) constantly giving you a sense of familiarity, which is not knowledge.
When I have to reread something that is not too deep I sense that I have made a mistake first time by not really thinking about the text.
