I have an 8 year old son with ADHD and learning disabilities in reading, writing, and math. According to his teachers, when he can focus, he performs on grade level. But he can rarely stay focused enough to show what he can do. He is on long acting Focalin which by all accounts helps, but maybe not enough. I was considering trying something like the ReVibe watch to help give him some cues for focusing. Has anyone used this and had some success with it?