It was one course (had a you fail the course if you got a sub 40% on the final) and I was able to rewrite the exam in the summer, loss of structure killed me coming from hs. Was definitely a wake up for me as well, had study groups and roommates in subsequent years which helped me (and unhealthy quantities of caffeine)

Got diagnosed with ADHD around a decade after graduating, which explained pretty much everything looking back.