C-Carbs: A CGM-guided Approach to Teaching Carb Awareness

Inclusion Criteria:

* Adults 18 years of age or older.
* Diagnosis of diabetes for at least 1 year.
* Currently using or willing to start using a continuous glucose monitor (CGM).
* Currently using multiple daily insulin injections (MDI).
* HbA1c ≥8% at screening/baseline.
* Does not routinely use carbohydrate counting or demonstrates poor/inconsistent carbohydrate counting for mealtime insulin dosing.
* Able and willing to participate in the study visits and intervention sessions.
* Able to provide informed consent.

Exclusion Criteria:

* Use of an insulin pump or automated insulin delivery system.
* Significant medical, cognitive, or psychiatric condition that, in the investigator's judgment, would interfere with participation or completion of study procedures.

Limited life expectancy that would prevent completion of the study.

* Pregnancy or plans to become pregnant during the study period.
* Current participation in another interventional study that could affect diabetes management or study outcomes.
* Inability/unwillingess to independently use a CGM device or administer insulin.
* Any other condition that, in the investigator's judgment, would make participation inappropriate or interfere with the study's objectives.