Hey bro, I was in your shoes. Do what you can; sit down for 2 hours and list down all the possible ways you can make money right now (selling lemonade, starting a clothing brand at your school, look for a family friend or someone who can offer small job opportunities, etc) List down as many as you can and cross out the ones you don't like.
But, Im proud of you for doing this so early in your life. Im 20 now but i started when I was 16. Please. Please follow my advice. Don't lose the consistency. Responsibilities make life harder and more distracting, Use NOW to ACTUALIZE. You are in the perfect position to. Don't fuck up.