Spaced repetition aids are fairly common. If you can store your curriculum as flash cards, then apps like Memrise and Anki are designed specifically for this.

Spaced repetition aids are fairly common. If you can store your curriculum as flash cards, then apps like Memrise and Anki are designed specifically for this. Spaced repetition is not the same as interleaving, but the apps will force you to interleave knowledge anwyay.