Let me understand this fucking amphetamine

I have the 94% HCl version. I'm currently working a marathon, but there's one problem – sleep. Nothing will put me to sleep faster than 9 hours. I specifically smoke weed, seroquel, and nothing at the earliest, which is 8 hours after my last second dose. Now I only have weed, so I'll fall asleep at 8 a.m. and my dose is at 8 p.m. WTF without I sleep without anything

- 1:00 PM 50 mg orally
- 7:00 PM 20 mg intranasally