Brushing our teeth is not number 1 in our lives either. We understand. You do not have to be obsessed with cleaning your teeth to have healthy teeth and gums, with or without braces.
Clean by the gum line for two minutes - at least once a day, but twice a day is better. If you miss an area once, you will catch it the second time.
Patients will come in and tell us: "yah, I forgot to brush my teeth this morning". Well okay. In these cases we almost always see plaque - that white stuff that collects around the gum line. Plaque takes at least 24 hours to grow so we are often seeing the result of a few days growth. So the toothbrush bristles were missing the gum line for at least a few days.
Don't feel bad. Just get in their with the toothbrush by the gum line. Your gums may bleed a bit. That means you want to brush your teeth more - not less. A few days of brushing by the gum line and all will be right.