After Linear Algebra - For Philosophers

Question

I'm a graduate student in philosophy in my late 30s, who didn't study mathematics for the last fifteen years or so. As a part of my studies/research in European philosophy/contemporary French thought, I had to deal a lot with philosophies of nature, and although I had run away from mathematics before the end of high school, I landed very close to the philosophy of physics (theories about time, specifically), and so I found myself mesmerized by mathematics at this late(r) moment in life. I worked via self-study through the high school level of mathematics equivalent to the UK A-levels (don't laugh, I seriously had hated math), and then studied the equivalent of two undergraduate courses in linear algebra and one in geometry, followed by foundations of calculus, so I was wondering if someone had any advice of where to go from here via self-study, esp. as I'm interested in the writing of proofs. That said, I'm not going in any specific direction at the moment, just trying to slowly work my way through a level of math that would allow me to vaguely understand graduate level math for physics one distant day, esp. topology. That said, I'm obviously not that young anymore so I probably won't become a math whizz and still have a graduate degree to complete, but also obviously my experience with logic and epistemology has shaped a lot of the way in which I look at the mathematics now, so I suppose I would like to pursue further options/topics/subfields that are not too basic but also not math for mathematicians.