seneca learning
keep doing exam questions more specifically past paper questions online
geography... know your processes inside and out. make sure you can read a map, structure a 9 mark question using case study knowledge and maybe identify examiners reports? its usually quite clear what examiners are looking for
for english lit know some points for context, theme, characters, setting, motif, language, form, structure and you're good to go :') remember when you're embedding quotes they don't need to be lengthy so just memorise a couple of important one.
for languages cover it all equally. spend good amounts of time on reading, writing, speaking and listening. consider high level phrases and imperfect tenses.
good luck! don't be stressed - take lots of breaks throughout your revision - and communicate with your teachers. they exist to guide you and i know it sounds scary because i used to feel the same way but asking for help especially in subjects like maths is so benefiticial.