By mid-freshman year, you've had time to try various activities. Now it's time to start focusing on the ones that matter most to you.
Aim for 3-5 core activities you'll commit to seriously.
You can still have casual interests, but your main focus should be manageable.
Quitting activities that don't fit is SMART, not weak:
Focus enables excellence. It's better to be great at a few things than mediocre at many!