I’m going to be a sophomore in college and plan on applying to transfer as a junior. My major is physics but by the time I transfer I will have only taken 2 of the required courses to major in physics at my current university & two optional courses (This is because I go to a LAC and didn’t know what I wanted to major in until I feel in love with physics just last semester). Will this hurt my chances of transferring to a competitive university? Additionally if I was part of a varsity sport my first year but drop it my second year to pursue other interests / focus on academics will that be seen as fickle and hurt my application?
Thank you to anyone who helps me out 
bump?
If you don’t intend to continue with your sport at the new college/university, then no one will care if you drop it now.
If you can express why the target institution is a better place for you to pursue your major, then not having many courses yet in that major won’t matter very much if at all.
It shouldn’t be a big problem for either of your concerns. Typically, by the time physics majors reach their third year, they have completed a full general physics sequence including modern physics and three Calculus courses plus Differential Equations. If you have these you will be ready to take Junior level physics courses.
We often see transfer students come to Illinois Tech in physics without Modern Physics and this can delay them a bit but since the degree is somewhat flexible, we usually manage to accommodate these students too.