I've been taking vyvanse for 7 months now and I can focus on my work but I get this feeling that i'm not interested in what i'm doing, I don't have anything to do and I feel kinda bored. Vyvanse last 12 hours for me. Not sure if my dose is too high, too low since it's causing boredom/not interested.

Any tips to help make Vyvanse work better? Anyone have similar issue? Would a different ADHD medication that last up to 12 hours work? Would a Stronger dose of Vyvanse help, I am on 50mg right now.