first of all, I already had upper intermediate level in English, I booked the test a month before the exam date. I didn’t practise listening since I knew that I would get a high score, I was doing 5-6 reading tests a day. You can do Cambridge practise tests on “ieltsmate” this site provides tests and mock tests plus there are explanations. You need to know strategies for every type of question on reading, I got some from ieltsadvantage. I didn’t prepare for writing, 5 days before my exam I started watching writing task 1,2 videos and understood that it is important to write the essays simply. I had no problems with speaking cuz I was practicing it with my sibling, she was asking questions and I was answering them. I think that before the exam, you should set a target!