I think the best thing to do would be to practice consistently. If you think Adderall is influencing your ability to focus or succeed on the test and are considering not taking it for the test. Try going off it for a week or two and take a PT or two in that time. If your score drops immensely or you feel any negative effects across both weeks. Maybe it's better for you to stay on it. Just make sure two things are true about your prep. You're putting your health (mental, physical, and otherwise) first, and that you find a rhythm for test day and stick to that rhythm for a while before test day comes.

Good luck my friend!

I think for me the best practice I've had has been exposure therapy. One thing that might help is finding some ACT PT's and doing those RC sections. Another thing I've found helpful is reading studies or writings about topics which I'm not familiar with. One way to practice this is offering to proof read friends' papers for classes you're not taking. My wife is an interior architect and I would often read her art history papers for her before she turned them in. This has helped me a lot and I hope you can find this helpful too! Good luck!!