Talking with your doctor about idiopathic hypersomnia...

During this past year, I was diagnosed with idiopathic hypersomnia. After trialing several medication's the only option that appeared to have an effect on this disorder was Adderall. Though I am on 30 mg of Adderall XR in the morning and 20 mg of Adderall in the afternoon, I am still having difficulties in staying awake. How do I address this topic with my provider and share with him that the current dosage is not working? I am concerned my doctor may believe I am drug seeking, and I'm finding it difficult to have this conversation. My mother was a prescription drug addict, and I am extremely aware and careful with everything I take.