Can you recommend an online course which I could use on my own to quickly remind myself, review and relearn the high school math and physics curriculum? I'm in uni now but I've got some holes in my knowledge and would like to go through the math from prealgebra to calc and beyond, and the entire HS physics.

I unfortunately don't have enough time to read an extensive book on every math and physics topic alongside my current studies, so if you could recommend material I could go through in a meaningful span of time to actually catch up with my uni level?