Most Helpful Guy
it seems to me that he has several interests and things that occupy his time and you, being a really great girl, go above and beyond to try and participate in his interests. I think it does sound like either he is losing interest in you or just unknowingly putting other interests ahead of you.
your best bet is just to tell him how you feel, exlaining that you feel like he doesn't seem as into you as possible. It could be that he is just slacking or it could be that his feelings have changed but it is clear that he is treating you differently0