@susannchen
My 15 year old son has adhd and struggles with everything you mentioned. He had a psychological evaluation to diagnose adhd and takes adhd medication to help him focus at school (methylphenidate and guanfacine). He has medication he takes after school for homework after his medication wears off from school. I need to remind him to do things and pay attention to the clock/time. You can use your phone and set timers and alarms/reminders/notifications to help you daily do the things you need to do. Use a planner to break down assignments and project due dates so you know the deadline and make some progress every day leading up to the due dates. You need to externalize things and use visual reminders of time and tasks. Use whiteboards that are in front of you and there are time timers that show you the passage of time to help you build your time sense.

Here are some helpful links. Good luck learning strategies to help yourself and ask family and friends to help you stay accountable. Also, get exercise and go outside before homework because it helps you focus. Make sure to eat well, sleep well and manage distractions as best you can.

1. https://www.additudemag.com/adhd-symptoms-in-teens/

2. https://www.additudemag.com/adhd-in-teens-challenges-solutions/

3. https://www.additudemag.com/help-teen-manage-adhd/

4. https://www.healthline.com/health/adhd/adhd-symptoms-in-teens