Senior year PLEASE HELP

Hi, I already got accepted into Purdue University. However my first semester senior year gpa was a 2.5 with 4 AP and calculus and they all were kicking my butt super hard. I was struggling a lot. Also, if I were to drop one of my AP’s which is AP Physics to regular physics do you think they will revoke my admission? Please any help/advice is appreciated

No, they will not revoke your admission because you very wisely dropped down from AP Physics to regular physics. They will not care. But you are required to report the schedule change. You probably will have to explain a bunch of Ds though - that is what could hurt your acceptance. Give some thought to how you are going to explain that and what you are doing to make sure this kind of over-reaching doesn’t happen again this semester.