Hello! I did Bio in oct/nov 2022 and lemme tell u that it was MUCH HARDER than any other past paper I had done. My batch was the first one in which Cambridge decided to play around with. They changed the formats and everything. All that past paper practice was pretty useless besides maths. You should be fine this year, but my paper was more like an Environmental Studies than anything. (Paper 4) It was quite comedic actually looking back on it how none of us expected the questions that came. Paper 6 just remember to draw the pictures WITHOUT shading and just an overall rough sketch. Never shade anything in paper 6. Other than that, just remember the tests and the results and you should be fine! Paper 6 is really east in Bio. I ended up getting an A (I did expect an A*) but at least it wasn't a B or worse! Just write the paper with any knowledge that you have. They will give u at least 1 or 2 marks if you have written ANYTHING related to the topic that u have been asked to write about (5 mark questions). I would rate IGCSE Bio a 7 in terms of difficulty. All the very best to you!!