Quit caffeine and substitute in cold showers.

[An Infinity Of Little Hours]

I have insomnia due to anxiety/depression so idk how I can wake that early

Get fully sober off all drugs and prescription meds. 

No more caffeine. 

Wake up that early just one day 

I guarantee after two days of forcing yourself up that early your ass will be out like a fucking light at 8PM my boy 

Try it and report back. No excuses anymore.