i know wace is different to vce, but personally i just found that the more practice i did, the more my vocab expanded. my mind mentally formed an automatic structure to answering questions and the more i got feedback/read good answers, i knew how to incorporate transition words, analytical verbs, etc. so i would suggest just practicing writing responses, or even just planning responses, and then getting feedback on them. this way you would memorise them subconsciously because you're using them more and more
hope that helps 🙂