It is not actually that effective to study the course in the order of the key areas.
If you do this you tend to remember the first thing you revised and the most most recent, but forget what was in between (you will actually learn about this later on the course when we look at memory).
Using an interleaving approach means that you deliberately jump between key areas when revising.
So perhaps 20min each on 1.1, 1.4 and 2.1 on Monday but 1.2, 2.2 and 1.5 on Wed etc.
The visual below may help you to plan this: