Spacing out the acquisition of knowledge is important and effective compared to massed learning. This concept is different than the spacing of retrieval practice (spaced-repetition) and simply means consuming the learning in bite-sized portions spread over time.

Progressive reading is a classic example of spacing out knowledge acquisition.

https://youtu.be/TTo35X2rqls

https://youtu.be/3WJYp98eys8

There is a lot of research to support the strategy of acquiring learning of a subject, spaced over time, rather than trying to accumulate it in a massed fashion. Here are just a few papers:

Spaced Learning Enhances Episodic Memory by Increasing Neural Pattern Similarity Across Repetitions - PubMed

The Right Time to Learn: Mechanisms and Optimization of Spaced Learning - PubMed

Dental education: Lecture versus flipped and spaced learning

Making Long-Term Memories in Minutes: A Spaced Learning Pattern From Memory Research in Education - PubMed