College is not the time to worry about spreading yourself too thin. It may seem like you're all over the place, but this is all just a drop in the bucket compared to the professional work you will do in the future. Most jobs will give you an opportunity to hammer away at the same code base for an extended period of time, and this experience will be far more valuable than doing a bunch of one-off projects in the same language simply for the sake of mastering said language.

In short, I think you're doing it right and will end up better off than someone who focused on one language because that's what companies appeared to want.