You can't avoid their "games" by playing games of your own. You will only lose your own game in the end.

If you need this much help to save your butt/job, then you need to be up front about it and work with the doc to figure out the best med changes/solutions to get the best results. It will likely take more than one trial or med change to figure out. You can't just say "it is concentration," throw a stimulant at it and expect a cure. You won't really get results until you know why you have the problem. Your posts indicate ADHD is only one of many possibilities.

I hear you saying that you think Adderall will be a good fix for your (possibly) ADHD problem and you don't want to risk anything slowing you down more at work. You really need to work with a doc to #1) nail down your problem and then #2) fix it because, I gotta tell ya, I am the gold medal ADHDer and the whole reason I can get through the work day at regular human speed is because Adderall SLOWS me down so I can focus and concentrate. It does not reverse the effects of my other sedating meds.

I also have a history of opiate use/abuse and I will tell you straight up that Adderall will not perk you up from the post-high sleepies. I used to take Provigil (a drug used to treat narcolepsy among other things) and even Provigil in large quantities was not enough to counteract large doses of pain meds. Believe me, I tried plenty of stimulants...they don't work. You only end up grumpier, more forgetful and less able to concentrate than you were to start and it will toast your heart. The only thing that works is not getting high...go figure.
Trust me. When you have that feeling like you can only move at a snail's pace and your eyes will only stay open if you staple your eyelids up, even an entire bottle of Adderall will not help at all.

And, yep, when you're getting off the opiates, it will be intolerably hard to concentrate. If you are up front with your doc(s) about EVERYTHING, they should give you something that can help with that.

Sorry to get all long and lecture-y. Your posts could have been mine a few years ago. Good luck. I hope everything works out and your web doesn't spin out of control.
Sending you good vibes...