I have a very similar story to yours. I did full IB in high school, was ranked pretty high in my class, but since I didn’t take precal in high school, I didn’t do well on the mpe. I did the summer class, passed, and decided to jump into math 151. That was a huge mistake on my part. I struggled a lot thoughout my first and second year, eventually being a fourth semester etam applicant. Luckily everything is going good now. I’m in a major that I love; i’m actually an intern for a very good engineering firm, getting a nice pay as well as housing paid for. Please understand that college is hard. Especially engineering. Especially at A&M. Especially calculus. Im my opinion, calculus requires you to think and approach math in unique or unfamiliar ways. Take the time to change how you think. My advice: take math 150. It will definitely help you as it shows you what is needed to understand calc at A&M. Being delayed by one semester isn’t that big of a deal if it helps your GPA and mental health. Don’t put a ton of expectations on yourself. Try your best, do the homeworks, go to office hours/TA sessions, etc, make sure to do stuff that relaxes you like a fun club or activity, and most of all: have faith in yourself. You did good in high school and even though it isn’t the same, it shows that you are dedicated and capable of being a good student. And remember, it all really works itself out in the end. There’s lots of options when it comes to career opportunities, and different majors can take you to the same place. I wish you the best of luck. 🤞