I would go through all of the sections in order and all of the lessons, however don't feel like you need to complete every single problemset - this is where all of the hours start to add up.
I would also add that I don't think it's necessary to do every single LR problemset - so rather than skipping an entire section, maybe just skip some of the problem sets. I certainly agree that you should not skip any of LG - do everything and more.
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What I've been doing is stimulating the Flex, and before I start, I create a problemset with the remaining section, then take all 4 in a row. That way, my score is accurate and I am still practicing a full length test!
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Alternatively, you can create custom Problem Sets of each section you ... />
1. Navigate to Problem Sets: https://7sage.com/problem-sets/
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6. Finally, tap on "Create ProblemSet with ... Problems" at the bottom ...