I’m also self studying mathematics on the path to a “DIY statistics degree” (currently revisiting Calculus as well). I imagine there is a fair bit of overlap between what you’re doing. Would be interested in hearing more about how you’re handling your education journey.
As a brief summary, I spend a couple hours every day working through a textbook. In choosing what/how to study in mathematics I'm driven by two considerations: 1. It's important to master the basics before anything else. So I need to cover linear algebra (done) and calculus (WIP) 2. Beyond the basics, I'm driven by curiosity/play. My current interests lie mostly in stats and physics.
Happy to chat otherwise, I put my email in my profile.
Interested in learning stats, differential geometry, classical mechanics, relativity, and quantum after.
Would be interested in discussing math ideas, proofs, problems.
Happy to learn/teach if you are close but above/below where I am at right now.