Regardless of when you choose to study, I recommend you define exactly which part of the content you will study in any given study session. If you don't have a specific plan that outlines the exact sections upfront, perhaps tell yourself you must study X number of pages per session. Don't do more or less than that part of the content. For example, if you decide to study the knowledge area around Elicitation and Collaboration during a session, perhaps agree with yourself to focus only on understanding the key tasks involved and the main techniques that can be applied during that hour and for those tasks. You might agree with yourself to do the knowledge quiz to test yourself on those tasks and techniques; however, once you completed that section, honor your agreement with yourself, and take a break. This way, you learn to trust yourself to achieve a specific study goal and don't feel as though you need to keep pushing each session's scope with more and more content. This way, you will also not feel guilty about whether you have studied enough or not! Be kind and fair to yourself.