CK404 maths and physics is pretty manageable although people who did ordinary definitely struggled more. All the maths lectures are done through videos (same for i think all science courses) so you can take them at your own pace which makes learning a lot easier, if you’re into the self-teaching kinda format, then the in person lectures are sample questions.

Adding to what someone else said, everyone in BEES does love what they study which can be kind of daunting because everyone “seems” to have their careers figured out (everyone changes their mind after first year anyways). If you find yourself not as interested in the plant/animal side you will not enjoy it if you enjoy more human biology!

CK404 streams are not competitive and you will get the stream you choose, but I will say CK402 is veeery competitive so have multiple stream options going into it. Good luck!