Too young for advanced mathematics

So I am in the 7th grade and I am taking Algebra 1. I already took all the highschool mathematics classes and have credit for them but due to my school requiring a math class somewhere is my schedule, I have to take the class. My math teacher has a P.h.D in mathematics from Urbana Champaign and when I told him if I could get challenging work, he gave a Algebraic Topology book. I studied the subject(still studying it) and he gave me a few questions like computing the homotopy group π_3(S^2) or computing H_(CP^) where CP is the complex projective space. He said that I was too young to learn and appreciate mathematics but I do appreciate mathematics. I have studied a lot of graduate mathematics such as topology, differential geometry, differential analysis, Galois Theory, Lie Groups and Algebras etc. My question is am I too young to take graduate level math and if I am not, what should I do to help enrich myself?

Thanks