any mainstream/niche study methods?

its a month in for JC school life and i have been trying to consistently study at least an hour a day excluding all the free periods i have in sch (of which i do study 90% of the time, with 10% to eat ofc), but lately i have been getting more tired and mentally foggy to even begin studying at night. so far my plans are:

-to study every weekday night

-friday nights and sometimes saturday nights are when i rest whr i slack and watch yt…

-on cca days or night tuition i wld only skim thru notes or study for abt half an hour

-saturdays are stacked with tuition while sundays are usually full mugging except for family meals/gatherings

my effectiveness/efficiency for studying is about 90% on good days and 60% on borderline tired nights, but i need new methods of studying since i never knew how to study to begin with since i only started willingly studying nearing o levels so any niche or even mainstream studying methods/schedules wld really help😭🙏