The present disclosure relates to a diabetes management system and methods related to the same. The system includes a pump device and a controller. The controller receives blood glucose data, determines basal insulin dosages based on stored baseline basal rates, controls insulin dispensation based on the determined basal insulin dosages, modifies a target blood glucose levels, receives a temporary override indicating a user preference to reduce the likelihood of a hypoglycemic or hyperglycemic event, determines a temporary target blood glucose level accordingly, and controls dispensation according to the temporary target blood glucose level. The controller can also calculate a probability that a blood glucose level crosses a threshold, determine a target blood glucose level based on a fear of hypoglycemia index and the calculated probability, determine insulin delivery information according to the target blood glucose level, and control dispensation accordingly.
