Almost my exact response.

And the cruel tragedy is that it becomes this self-reinforcing cycle.

Sleep bad > "Bad" ADHD day > Harder to fall asleep. Rinse. Repeat.

Then add in the use of powerful stimulants (e.g. Adderall) to power through a workday, only to have that cause insomnia that night, and a wrecked sleep schedule for the following 3 days.