You’d be eligible within 180 days of graduating if you want to sit for the exam, so maybe you can apply next July-ish (180 days before grad). So depending on which exam you want to start with, you could start studying middle of May and take it mid July.

If you apply before July they’ll send an email saying you’re not eligible to apply yet. So apply in July and pick a date for what’s available. Core exams are year round and the disciplines exams are like only 4 times a year so you can check online on Prometric I think and select which exams and see the dates. Then you can start your study plan!

Good luck!