Hello,
You are the best person to judge the effectiveness of your treatment. If you are still having difficulty managing your attention and organizing your thoughts, I believe that an increase in the dose may be appropriate.
In this case, we must make sure that you tolerate the treatment well, you mention that you sleep well and that your appetite is not affected, which is very good! As far as stomach pain is concerned, Vyvanse can sometimes be the cause.
In your situation, I recommend that you talk to your pharmacist who will be the best person to judge if increasing the dose is safe for you. He or she may need to talk to your doctor!
If the dose is increased, it will be important to follow up on the efficacy, but in relation to the pain you mention and other side effects.
I remain available and hope to have answered your question,
Pierre-Luc Tremblay, pharmacist