You have a 28 yo patient with ADHD whom you recently started on Vyvanse 40mg. They report significant benefit,

You have a 28 yo patient with ADHD whom you recently started on Vyvanse 40mg. They report significant benefit, however report some difficulty falling asleep at night. What might be your next step? a. Advise patient to cut medication in half and take in divided doses b. Increase the dose c. Add an afternoon dose d. Advise patient to take earlier in the morning