rushing as a junior

How hard is it to rush a sorority as a junior? Ive wanted to rush since I was a freshman but I was still trying to get used to the change so I didn't want to add something on top of that. I've spent my sophomore year improving my GPA immensely so now I think I would be ready to rush in the fall. I do have around 3 more years left because I did change my major (I don't know if that makes a difference or not). I was just worried about how difficult it would be to actually get in this late.