One of my favourite methods of revision and a method I always recommend to my students is to write your own questions.
Pick a subject that you want to revise and look through the relevant chapter in the text book. For each paragraph prepare a question that you think you might be asked in the examination and then come up with four possible answers. It often helps if the answers are similar, maybe they start with the same letter. For example:
Which region in California is well known for its cool climate Chardonnay:
c) Central Otago
You can then put all the questions together in a document or notebook and go through them regularly until you know the answers without even thinking! Maybe get friends or family members to ask you the questions or you could use an app that I recently discovered called Chegg.
Short answer questions are a little bit harder to write but if you keep the subject specific it will be easier. Again choose a subject you need to revise and, break it down into the most important factors that you need to understand about the subject and then write appropriate questions to help you remember the answers. For example:
What are the three grape varieties used to produce Champagne?
What are the climatic hazards often experienced by viticulturalists in Champagne and what effect does this have on wine production?
Factor: Cool summer temperatures
Effect: Underripe grapes, low alcohol, high acid wines
Factor: Spring frosts
Effect: Reduction in yield
I recently held a WSET L2 course at Monachyle Mhor and was very impressed with their approach to study. All of the group were involved in preparing flashcards like this …
… questions on one side, answers on the other. They had piles and piles of them! Then they asked each other the questions, over and over again, picking questions at random and shuffling the pile.
Might work for you too!