Is it too late for me

I'm a year 12 student doing Maths, Physics and Biology with Mechanical engineering planned in the future. I have come to realise that I absolutely despise Biology and wish I would've picked Chemistry instead. During IGCSEs I have gotten a similar result in both, Chemistry being 2% higher. The reason as to why I decided on Biology is because I have heard horror stories about Chemistry from upperclassmen and my teacher at the time told me that I'd probably not be able to handle it. I'm in love with the material properties and get excited about the reactions, products, bonds etc but I know that just liking the subject isn't enough. By the way, I'm predicted an A in Physics and Maths but a low B/high C in Biology. Should I just push through? Could I relearn Chemistry GCSE material and AS in one summer? Thanks

I'm a year 12 student doing Maths, Physics and Biology with Mechanical engineering planned in the future. I have come to realise that I absolutely despise Biology and wish I would've picked Chemistry instead. During IGCSEs I have gotten a similar result in both, Chemistry being 2% higher. The reason as to why I decided on Biology is because I have heard horror stories about Chemistry from upperclassmen and my teacher at the time told me that I'd probably not be able to handle it. I'm in love with the material properties and get excited about the reactions, products, bonds etc but I know that just liking the subject isn't enough. By the way, I'm predicted an A in Physics and Maths but a low B/high C in Biology. Should I just push through? Could I relearn Chemistry GCSE material and AS in one summer? Thanks

You can change in theory - I dropped computer science towards the end of year 12, picking up more Engineering instead.
This is something you would be better off discussing with your school. You will probbaly have to fight to be able to swap.
Realistically speaking, do you think you would be able to learn the whole AS syllabus in 6 weeks?

I'm a year 12 student doing Maths, Physics and Biology with Mechanical engineering planned in the future. I have come to realise that I absolutely despise Biology and wish I would've picked Chemistry instead. During IGCSEs I have gotten a similar result in both, Chemistry being 2% higher. The reason as to why I decided on Biology is because I have heard horror stories about Chemistry from upperclassmen and my teacher at the time told me that I'd probably not be able to handle it. I'm in love with the material properties and get excited about the reactions, products, bonds etc but I know that just liking the subject isn't enough. By the way, I'm predicted an A in Physics and Maths but a low B/high C in Biology. Should I just push through? Could I relearn Chemistry GCSE material and AS in one summer? Thanks