Research has shown that it takes 200 hours of guided study to move up one full point in IELTS. Guided study includes working at home, as well as face-to-face lessons with a teacher.Before making a Study Plan, it is a good idea to identify weaknesses using the Cambridge Grammar textbook. What are your weaknesses? For some students, it is Writing; for others, it is Speaking.
More than 45 day is preferable to prepare for the test.
Try a 5-day rotation of L-R-S-W with a mock test every 5th day.
It is said that if you cannot complete the writing tests on time under mock conditions, it is pointless doing the real test.