Question about psychologyWatch
I believe there is a longer topic in it in year 2 but again its Biopsychology and I think there is many resources out there to help.
Finally, when science is used it focuses on biology. I've yet to use physics or chemistry so dont let be a barrier. if your not confident in science, it will just be a few sections you may have to revise more but I believe that you will be completely fine.
Good luck and if you take it, I'm sure you'll love it