do you think it’s possible for someone to self teach tertiary level maths/physics from scratch?

hi, i’m 21F currently finishing a bachelor of nursing, but i’ve realised there are so many things i still want to learn on the side. my uni doesn’t really allow electives with this course, so i’ve been thinking about self teaching instead. i loved chemistry and biology in high school, but after ~3 years of basically no exposure to them i feel like i’ve forgotten almost everything, which honestly makes me sad. i miss learning for the sake of learning and want to start studying again to keep my brain active and to retain as much knowledge as possible.

i’m essentially starting from scratch, so any tips, encouragement, or advice would be appreciated.

also, i know physics and maths can be harder to learn independently, but i was wondering if any physicists/math people/stem nerds here have a sort of roadmap they’d recommend? like where to start, what order to learn things in and the most effective methods/resources for self teaching.