HS Junior Natural/Life sciences local SoCal

Our High School does offer a full menu of AP classes in every subject.
My son is an anxious kid and struggles with self-confidence, so has always been timid about over-extending himself by taking on AP-level classes (I somewhat agreed). He has always been on an ‘accelerated’ math track, but not necessarily “honors” math. This year, he takes pre-calc in 11th grade (while most kids take Adv Algebra/Trig). He is also challenging himself with AP Biology this year. He is absolutely loving it and it helps that he loves his teacher. He is holding an A :-).
I’m hoping that his success in AP Biology will show him that he CAN handle a more rigorous class and even enjoy it MORE than a ‘regular’ class bc it seems to be his is surrounded by other students who really want to be there to LEARN and not mess around.
For senior year, he is considering Calculus (AP), Physics (AP or reg), Intro to Computer Science (AP), and Biotechnology (identified as a UC “honors” course, but I don’t think it’s considered AP)