Don't feel discouraged if you aren't doing as well as you thought you would, all you need to do is just tweak your revision methods or change something to make the difference.
Here are my tips:
- Know the content! Go through a topic list/ your specifications and mark all the topics you feel intimidated/confused by, those topics will be your primary focus to tackle
- Watch a video explanation of each topic (you could use a textbook, but textbooks often put too much or too little info relevant to the specification), I recommend cognito and freesciencelessons for this.
- Know your equations! Physics is highly dependent on equations, compared to chem or bio, so make sure you know them as they could be easy marks!
- Know your PRACTICALS!! Practicals are questions that can easily come up in any exam as a 6 marker, so make sure you know them to secure those marks!
- Do practice questions - I recommend PMT and MME revise (MME revise actually had some questions that were used in my end of topic tests, so 100% worth the look)
I hope that helps and good luck with your exams! Your hard work and efforts will be worth it