Without medication is hard for me. I don’t have AD/HD, but experience insomnia and racing thoughts and anxiety issues near bed. Medication is the only thing that works for me right now. But I can suggest that you have a constant sleeping habits like go to bed and wake up at the same time. Don’t use electronics at night. Read something or do something really boring. Don’t exercise a few hours before bed, don’t eat too close to bed either. These are just suggestions. I use medications at the moment so...