Sleep Coach for Adolescents With Type 1 Diabetes

This study is testing a digital "sleep coach" tool designed to help teenagers with type 1 diabetes get more and better sleep. Poor sleep can make it harder to manage blood sugar levels. The goal is to see whether improving sleep through the app also helps improve blood sugar control (HbA1c). **You may be eligible if...** - Your child is 11–17 years old - They have had type 1 diabetes for at least 12 months - They are currently not getting enough sleep (less than 8 hours per night for teens 13–17, or less than 9 hours for those aged 11–12) - They do not have a diagnosed sleep disorder or sleep apnea - Their HbA1c (average blood sugar level) is above the target of 7% - They can read and speak English **You may NOT be eligible if...** - Your child has other serious health conditions that interfere with diabetes management - They have metal implants or other conditions preventing an MRI (for the optional MRI portion of the study) Talk to your doctor to see if this trial is right for you.