Acceleration of Recruiting Timeline

I'm just completed my first year at a semi-target and have been looking into IB. I thought the general timeline was to get a relevant internship sophomore summer, and then try to get an IB internship junior summer and hope for a return offer. However, I've been reading that recruiting is moving up, and that even junior summer(so 2020SA for me) would begin sophomore spring semester(2019 spring for me). This sounds crazy to me. I did not get any internship this summer, just working a regular job. If junior summer recruiting is this quick, how does a sophomore summer internship even come into play? I won't have any internship experience by sophomore spring to have on my resume. Am I already behind? I had a high GPA first semester, did some business competitions, and starting learning more about different career paths, but I didn't realize how early everything starts.