curium for maths and nr the questions u get from edutest r pretty similar and if u hv done sehs its waayyyyy easier- for this js make sure u hv a solid foundation of yr 9 maths and then spam practice questions if u struggle in this area, otherwise js do consistent practice maybe 2x a week
For science reasoning you need basic science knowledge up to yr 8/9 level and good reasoning skills, for this icas works and most tutoring companies hv decent sr papers. I spammed icas tests and went thru the whole textbook to prepare.
For writing get familiar with the two structures (science report and js normal essay structure) and practice writing in timed conditions and brainstorming ideas. For practice prompts js use ai to generate and mark them or if u hv a tutor u can ask for extra feedback