Use the CFAI textbooks. The Schweser notes are OK and can be used as a quick refence but focus your time on the textbooks! The exam itself is going to come directly out of the textbooks. I don’t think it’s a good use of time to read the notes when you have to choose between the two.
Do every single question in the readings (the “blue boxes”) and end of the chapter questions. Especially focus on the end of the chapter questions that are in item set format. This is exactly what you’ll encounter on exam day.
Make sure you’re very comfortable with equity, accounting, and corporate finance. These are heavily weighted topics and will probably appear in both the AM and PM sections. I can’t stress this enough. Maybe you go 2/6 on economics. That sucks but it’s much, much better than going 8/24 on corporate finance!
Spend the month of May doing practice exams, reviewing all the answers, and making sure you know why the correct answer is the correct answer. Spend time rereading those sections that aren’t clear. Do as many of the past CFA mock exams as you can find. The Boston Society mock exam is a great resource as well.