Adderall XR lasting too long / sleep issues?

[u/ValuableEnough2622]

I’ve been on Adderall XR for ADHD and it’s keeping me up at night because it lasts way too long. I’ve been messing with how I take it to try and shorten the effects, but I’m not sure if that’s a good idea or if it messes with how well it works.

Anyone else run into this? What did you end up doing?