Levothyroxine and vyvanse

I’ve been on levothyroxine for hypothyroidism for the last 6 years. I started Vyvanse for my ADHD this week but I’m struggling to figure out when to take each.

How long should I wait after taking my levothyroxine in the morning to take vyvanse. The guideline for food is 30min to an hour. The guideline for caffeine is 1hr. What about Vyvanse and other stimulants?