Chemistry tbh is pretty easy if you know your maths. You do 5.3 so you’ll crush the maths part of chemistry. Considering most of the state that does chemistry struggle with the maths part, just being able to do the maths stuff alone can secure yourself an easy band 5. The rest is just theory, which is also easy to grasp. Everything in chemistry is very hands on so the concepts are built on a solid foundation, it’s just the memorisation of applications that can get a bit tedious sometimes. Physics on the other hand, the concepts are not at all easy
but the memorisation of content is little. However, once you put in the time to master physics concepts, there’s nothing stopping you from smashing the course.