[KeplerBoy]

You don't need your Computer to study for those undergraduate math course. Stop sabotaging yourself.

Print your lecture notes, old exams and the assignment sheets from the exercises, get your ass in the library and get cracking.

You know exactly what you have to do and the only thing in the world that could stop you is yourself.

Also: This is your best shot at getting higher education for free, while you're still young and mostly free of responsibilities. If you fail to take this opportunity you will remain a coder without actual knowledge of the fundamentals. Do you think coders with little formal knowledge will be in high demand as ChatGPT claws more and more tasks from us? (This take might be overly pessimistic, to get you motivated)