Hard to say, we don't know what your calc, diff EQ, LA, probability/stats etc classes were like. You could self study Pugh, Abbott or Spivak. At a bare minimu

Hard to say, we don't know what your calc, diff EQ, LA, probability/stats etc classes were like. You could self study Pugh, Abbott or Spivak. At a bare minimum you can read Lara Alcock/s little red book on analysis. Or you might unfortunately be in the position that you don't quite have the support group, focus or prep for Pugh or Abbott's books. The other question is, what are you giving up to study real analysis? If you don't have great software engineering skills, along with related skills (linux/network admin, database design/tuning) there's a good argument that you would be better off developing those skills instead.