In short, it all depends on your learning style. From the day you sign up to take the NCBTMB Board Certification exam, you have three months to take the exam. That may be the perfect opportunity to purchase a three-month subscription. Ask yourself what will be best for you and make your decision based on that. There is no right or wrong time to purchase the Online Practice Exam.
Please note: The OPE is a voluntary product. Use of this product does not guarantee a passing exam score.