Here's the studying strategy from one student who has recently score a 2330 on the exam and got accepted to Ivy League school:
1. Take one full practice exam per week
2. Mon - Wed: Monday focus on math, Tuesday focus on writing and Wednesday focus on critical reasoning
3. Thur and Fri: go through all the sections that you have difficulty on from Monday thru Wednesday's material
4. Any other down time if you feel like you have enough rest, brush up your vocab list and do some light reading.
5. Total prep time for exam: 4 months