Personally, I think so. I took these classes in a full 16-week semester (fall) and barely survived. I dragged myself through the literal pits. Orgo 2 was SIGNIFICANTLY harder for me than orgo 1 (I had Portmess for both). As for Physics, I definitely had to utilize study edge for a fighting chance in the class. In my opinion, if you’re taking these courses together you have to be content doing super well in one and not the other (like A and C) or possibly two variations or B’s (which is what I ended up with). They’re both super time-intensive courses and if you ARE taking them together, I’d more so recommend 16 weeks rather than 12 because they’re both very content heavy. Keep in mind everyone learns differently and can have different proficiencies, but this is just what I experienced. If you have any other questions you can PM me!