Start with a summary (or multiple summaries) before diving into the chapter. This will actually save you time.
Get an AP prep book and use it often. (links below)
Make written product. Don’t just passively read or watch. Take notes, make timelines, write your own summaries.
AP World, APUSH, and US Government & Politics
Heimler’s History: A collection of brief, summary-style YouTube videos that are made to align with AP curriculum.
AP World History (and world history in general)
AP US History (and United States history in general)