I do 4 of the same subjects:
For chemistry:
Pay attention in your classes because there will be some content that will pop up again in year 12, so you want to make sure you understand it well and can apply it appropriately. Try to stay on top of your notes and go through lots of practice questions.
Biology:
Similar to chemistry. With regards to both sciences, make sure you cut the fluff with responses and get straight to the point.
PDHPE:
I found PDH to be the easiest of my subjects, but it was also one I enjoyed thoroughly. Stay on top of your notes and gather heaps of examples to use in your responses. Don’t just assume PDH is easy though, you have to make sure you understand the content as well because you can get a curveball question
English:
Refine your cohesion and always make sure you address the essay question instead of rambling on. Practise being able to pick up techniques as fast as you can in unseen texts. Be sure to practise creatives as well
For all your subjects, try your best to not leave assessments to the last minute. It was a bit of a struggle the beginning of year 11 trying to balance study and assessments, as well as extracurriculars...but eventually you’ll figure it out and prioritise. Best of luck!