is it possible to self teach physics/maths from complete scratch?

hi, i’m 21F currently finishing a bachelor of nursing, but lately i’ve been feeling sad about how much knowledge i’ve lost from not engaging with science anymore outside of my degree. i used to love chemistry and biology in high school, but after ~3 years of barely touching them i feel like i’ve forgotten almost everything.

my uni doesn’t really let us take electives with this course, so i’ve been thinking about self teaching on the side because there’s still so much i want to learn. i genuinely miss learning and want to keep my brain functioning instead of letting it rot lmao.

the issue is that i’d basically be starting from complete scratch again, especially with maths and physics. i barely remember anything beyond very basic concepts, so it’s a little intimidating trying to figure out where to even begin.

if there are any physicists/math people/stem nerds here, do you have a roadmap for what order i should learn things in or the best methods/resources for self teaching? any advice or encouragement would genuinely help.