Use You Tube it’s a great source.
Use spaced repetition, mind maps and if time flash cards.
Memory and mnemonics is a must if you can. Things like acronyms, Loci or Roman room method.
Practice past papers.
Two weeks isn’t very long so use deep focus in 20 minutes with five minute rest then repeat.
Find what your getting mistakes in and go over those bits.
Read mark schemes - they really do give away what the examiners are looking for.
Practice papers look up working if you get stuck then go over the question again.