What's actually different about your situation
Your constraint is that you have more time than you think and less than you will use well. The junior year window is wide enough for two sittings before senior deadlines, which means you can afford one attempt that goes badly. Almost nobody plans for that, and it is the single biggest advantage available to you.
The order to do it in
Sequence matters more than volume here. Doing step three first is the most common way this goes wrong.
Sit a full-length adaptive mock cold, before any preparation. The number is not the point; the error categories are.
Pick a target date in March or May. Working backwards from a date is what turns intention into a schedule.
Spend the first block on Module 1 accuracy, not on hard questions. Routing decides your ceiling before the hard questions ever arrive.
Leave August and October of senior year free as a retake window. If you don't need it, nothing is lost.
By what you're aiming at
| Your goal | Start here |
|---|---|
| A first real score | When to start |
| Raise 100+ points | Score jumps |
| Reach 1500+ | Chasing the top |
| National Merit | Merit cutoffs |
| Scholarship money | Score to dollars |
| Submit or withhold | What's good |
Start with a diagnostic, not a syllabus
A free full-length adaptive mock tells you which of the steps above is actually your bottleneck.