I found each section of the curriculum quite useful for learning the different types of LR questions. However, I think you can make up time by not doing every single practice set in each part. I would do about half the problem sets in each section as I went through it the first time. This has the added bonus of saving extra practice sets for particular question types that you can use later.

Also, I think you'll find that once you make it past the LR section of the core curriculum it speeds up significantly. The games section took me about a quarter of the time the LR section did, and I skipped the reading section entirely as I felt that was the most self explanatory part of the test.

Head here https://classic.7sage.com/problem-sets/ and follow the instructions to make custom problem sets.