Welcome to the HowToADHD forums, Jake!
I was on once-daily Adderall XR (the extended-release form) for a few months. It didn’t affect my sleep, but I was already only sleeping about 5-6 hours per night. I’m 46, and my sleep issues are due to life-circumstances (being stressed and having a lot of demands of time). Ideally, I would get 7-8 hours each night.
It’s good that the Adderall isn’t making it difficult for you to fall asleep. It should stop acting at night, so that you can remain asleep, but there is an adjustment period while your body and brain get used to any medication which affects the brain. Definitely tell you doctor or psychiatrist who prescribed the Adderall about the change in your sleep patterns.
You may need an adjustment in you medication dosage, or when you should take it. You may benefit from a sleep aid, like @ALADDIN shared about.
Is there something else waking you up?
Could there be worries, stress, or changes to your home/school/work life waking you up?
Be sure to address any issues causing stress, anxiety, or depression.
I went through over a year of sleep disturbances due to anxiety (caused by intense work-related stress). During that period of time, it was often difficult for me to fall asleep, and if I woke up between 2:30am and 5am, I usually could not fall back asleep. I would usually wake up to “racing thoughts” at about 4am during that difficult time in my life.
I had to get a new job, start going to therapy, and take anti-anxiety medication for a few months in order to get my mind and my sleep back to some semblance of normal. At the same time as I was diagnosed with anxiety, I also was diagnosed with ADHD (at 45 years old), which gave some perspective to many of the struggles that I’ve gone through in life.
(I’m no longer on Adderall, but just started non-stimulant atomoxetine a few days ago. So far, it seems slightly better for my ADHD symptoms, and my sleep is more restful, but so far I’m sleeping about the same number of hours each night. Again, in my case, it’s mostly due to a busy life.)