Hi! I totally understand this feeling, don’t worry. I’m an IB senior myself and last year I really felt like I was drowning in the amount of work. At my school, we do not really have many choices for what IB classes we want to take, so my schedule looks completely different from yours. Anyway, what I CAN tell you is that you should all the help you can. The second you feel like you’re failing in a subject I would suggest looking up explainer Youtube videos (KhanAcademy for Math, etc). If you feel like Physics is going to hold your GPA back in the long run, drop it. You shouldn’t burn yourself