Another ADHDer here! Be really careful not to burn out! Burn-out is real, and if you have ADHD it can be particularly nasty. You're in yr12, so don't worry. Double check the exam syllabus to make sure your textbooks cover the right things.
Here's my advice to keep on track:
- Make a healthy study schedule. for my A-levels in school, I had about 2-4 hours of classes a day, plus prep and consolidation tasks (2-3hrs accounting for ADHD getting in the way). Try to incorporate healthy study hours like that in each day. Have set times but give yourself flexibility if needed, but give yourself enough structure so that your brain doesn't procrastinate against your will. Plan out a regular schedule for your days and when/how you'll study. I wouldn't plan your entire year day by day, but I'd recommend creating 'checkpoints' with what content you want to have covered for the end of each month, maybe with some past paper questions. This way, if you have a bad day, you don't mess up your whole study timetable (I've done that in the past) and you can redeem that time on a better day.
- Have a regular sleep schedule (set multiple morning and evening alarms) because that really makes a difference for ADHD symptoms.
- Use the Pomodoro technique if that helps you get through the hours.
- Try body doubling with someone else who is doing their own work to help keep you on track. If they have time, ask if you can teach them what you're studying at the moment. Explaining things in simple language to other people helps you understand and internalise the topic for yourself.
- Plan in time to relax and do other things. ADHD people often have trouble switching between tasks and therefore struggle to relax sometimes. Plan in some exercise (it can just be a walk), it can really help with ADHD symptoms and overall mood. Plan in hours to go out and have fun. And if you have a bad day and don't get as much done, that's fine! Celebrate what you do get done, no matter how small. ADHD brains like dopamine, rewarding yourself after completing a chapter for example, will make it easier to study going forward.
My university suggested this ADHD workbook to me and I was actually really surprised about how useful it was! You might want to try it, it can help you with studying and also the stress that goes with it. I did a chapter a week (it's not that long) and picked out one new ADHD strategy I was gonna try implement for the week. It's 'Understand your Brain, Get More Done" by Ari Tuckman. Highly reccomend.