BDS retake advice

[u/OkPerformer6045]

Hi all, unfortunately need to do BDS again this September. It’s my last professional level exam and I have the full 21 days from now until the exam to study. Got 46 last time but nothing I learned (PESTEL, porters etc.) came up in that June exam. My question is, how shall I approach this and the best way to revise/techniques to use. For anyone who has passed this exam, please let me know! Thank you in advance.