I'm on a slightly higher dose of Concerta now, & it does seem to be helping with my problem where I get nothing done at work. So that's probably good.
It's not a huge change but I certainly felt it wear off more dramatically last night. Which isn't all bad. It's just a little weird to have a point in the evening where your brain suddenly switches what it even means to focus on something.
Suddenly last night I had several trains of thought going instead of one.