I went to school because my distant relatives gave me part of my tuition. Now the school is about to start. How to send them text messages to remit tuition fees?

Are you in college now? If you have, you can work and study by yourself first, pay part of it yourself, and ask for a small part from your family to reduce the burden on your relatives. You can say, start with the title, make a few polite remarks, get to the point and end with one sentence. After all, I have no experience in this field.