Your physical conditions matter a great deal too. Make sure you get enough sleep, eat well, and exercise. I've never tried it personally, but some people on this forum are recommending regular meditation too.
@runiggyrun is correct! You can also click the green checkmark next to the lesson on the syllabus page if you don't hit next/done.
https://7sage.com/progress/
Completing each RC problem sets takes me almost 2 hours (including BR and videos) but on syllabus it is indicated that it should take one hour. How long completing an RC problem set should take?
Update: Looks like this is only happening via the Study Schedule. You can still normally access lessons by going to the Syllabus:
https://7sage.com/progress/
One thing that's worked quite well for me has been mindfulness meditation before taking a practice test. It sounds like you're pretty stressed out... that cumulative stress can cloud your thinking as you go through the test.
... finish one part of the syllabus I feel as if I ... I continue through the course syllabus and then return to practice ... I was studying in the syllabus until I felt like I ... sets per unit in the syllabus. But dont worry, you can ...