How come I've only managed to study for 4 hours since morning

[kathisterima]

and approximately 1 h was me trying to figure out what to study in the labyrinth of notes I've been keeping on each subjects those 9 years.

I thought I could be able to put aside 12h of study per day, maybe I need to focus rly hard on 8h/day for now and hope I build some immunity to procrastinating and raise it higher. 

I really really need to be done with uni this year, otherwise I will 100% rope because it's too much of a burden atp.