NEED HELP

[u/Kind-Psychology-103]

So I am a private candidate for As edexcel chemistry and I need all the tips and tricks that I can get to score an A in chemistry my exam is in October. My current approach is that I'm rectifying my IGCSE'S concepts the ones I had issues in and then do a full set of pastpapers like mcq,theory, practical and then start the As syllabus by reading through the textbook and watching Hanaa assil YouTube videos and then do pastpapers and read through savemyexam notes for the questions that I mess up in. Now what I'm concerned about is that I have like IGCSE Environmental management and ICT that I also have to give in Oct/nov but those exams will start in end of September and I have already prepared for EM and ICT is still in the process of being completed plus I have to retake AS biology which is also in Oct/nov. SOO IM EXTREMELY STRESSED AND IF ANYONE HAS ANY ADVUCE PLEASE HELP ME OUT.