I've been on adderall for 20 years and haven't ever had to increase my prescribed dose. I even usually reduce my dose in the summer after my week-long break. I bring it back up after subsequent holidays in the autumn.
The only times when I've thought it wasn't working, the med holidays brought it right back on track.
Could be placebo. Also n=1. There's very little lost in attempting (it assuming your dr is kosher with it).
What was good to know was that there doesn't seem to be any addiction potential for me at all. I hate being lazy and unmotivated without the meds, but there is no urge nor withdrawal whatsoever, which is fantastic, as someone that got addicted to half a dozen things in their life.
I was afraid I would start to enjoy the meds too much, but I am much more dependent on the cup of coffee I drink once a week (and every day during work I start craving a Coke) than amphetamine.
The fact that the medication is out doesn't make your dopaminergic system more sensitive by itself. It might take a while.
So, my dopaminergic system probably has holes burned through it.
I wonder if the dopamine system might need more than a few days to reset. In my experience with addiction, it takes months.