I was mostly math illiterate too. Geometry was my strong suit, not manipulating symbols. Still want to learn PDEs someday just for fun, mostly because I have no idea how to model anything as a PDE.
But I would never try to learn PDEs to make money, because it would put me under a lot of pressure, since I wouldn't be doing it just for the knowledge. Just make sure you're having fun as you're questing your way towards programming. It's key.