Ok so if you want to stick to online- try switching it up a bit- make PowerPoints, there’s websites where you can make online flash cards and then test yourself. Try and only do an hour of a subject at a time- half an hour making notes then half an hour testing yourself on what you’ve learned. If you do too long it won’t stick in your head.
I do a mix of word, PowerPoint and revision cards
What I found to work was be really strict on timing. Maybe create a timetable and assign an hour a day to each subject. And trya nd always test yourself or answer practise questions- then you're applying what you've just learnt so it's more likely to stay in your head.
Haha I did all essay subjects at A Level too- so much fun lol. So maybe have an essay question for the week- spend a few days researching, making notes learning all the info. Then on the last day write the essay timed. Always get your teachers to mark any practise questions you do as well so you know what to improve on.