Concerta day 5&6 - new week new expectations

Yesterday I took two pills of Concerta 36 mg while working from home with a sick child watching cartoons all day few meters away from me.
I have to say this was not hyper productive but I said to myself before taking the meds that this is going to be a part of today and I should not expect it to be perfect.
Basically I created a mental offset and maintained it.

Overall is was a good day and I maned to do some things some of them for 3 hour long concentration periods.

Today I took the meds at the morning and it was smooth and fairly perfect.

I managed to practice some guitar playing before heading out to work. Had a great train of thought in the car, basically I processed some logic of online promotion strategies without forgetting parts or switching my attention away.

The workday did not require me to process attention demanding tasks and almost did not feel the effect.
This makes me think - is it working at all?

Interestingly enough - it lasted longer today and made me stuck on Reddit for far too long