So hopping in a bit later to this but in terms of things to mention I’d include any heart/cardiac issues you have or may have had, even if you aren’t sure. Many (most? all?) ADHD meds can cause elevated heart rate and blood pressure which isn't usually a big deal but can exacerbate existing problems.

I was put on a non-stimulant (atomoxatine) first because of underlying cardiac concerns and thankfully I’ve been happy with the results. It also lowers my anxiety around taking meds as I work in a job with frequent random drug screenings and while it isn’t a problem to be prescribed a stimulant, it is more of a hassle.

Lastly, especially for non stimulants, give it plenty of time before you decide if it’s helping or if side effects are too bad. I didn’t really notice a single moment of “wow, that’s a difference” but rather a gradual ability to better manage my distractions and hyperfocus. The side effects also nearly completely went away after a couple of months, and I only get nausea when I change doses or pick up after missing one.

Medication is mostly trial and error. What works well for you may not work well for somebody else and vice versa. You're not likely to get on too high a dose initially since they're going to want to start at a low dosage and increase as needed. You're also not going to get everything resolved at your first appointment. It doesn't take long to get results but it does take time to get everything adjusted.

Stimulants are a typical first line of treatment for ADHD. They do the job well, for most people, once you get everything dialed in, which can take a few months in some cases. Avoid caffeine, at least when you're starting out unless you like "overwhelming feelings of impending doom."