If you are really struggling to find time to do studies this holiday, i have a few tips that i can share that helped me through the HSC holidays:
1. Revise, brush over, and solidify what you already know. This applies to syllabus dot points and all previous examined questions in tests. In addition, try to remember what you struggled with most prior to the holidays and make sure that you clearly understand it this time.
2. If you have the time, try and scim read/ take critical notes on upcoming syllabus dot points ie. getting ahead. However, make sure that you dont dwell too deep into the content (hence the scim-read), as when you are struggling with time, you tend to subconsciously panic and mix up content that you dont fully understand yet. When you get back to school, your critical notes/scim reading will act as a basic foundation for your teacher to then build up upon.