You’re fighting an uphill battle. Dealing with the symptoms of minimal sleep will never be as effective as addressing the underlying issue.

I suggest the following:

Exercise 4-6 hours before you want to fall asleep. Only lay on your bed when going to sleep. Instead of counting sheep or thinking about anything, practice taking deep breaths, as many as are necessary. Quit caffeinated beverages 8-12 hours before bed.

Best of luck