Techniques and devices are described for allowing a diabetes patient to safely disconnect an insulin infusion system device for a time period. In one aspect, the techniques and devices can be implemented by receiving a maximum glucose amount, a minimum glucose amount, and a contemplated disconnection time receiving a current glucose amount of the user determining an expected increase in glucose of the user based on the contemplated disconnection time, an insulin sensitivity of the user and a contemplated basal insulin dose validating the contemplated disconnection time based on at least one of the expected increase in glucose, the maximum glucose amount, and the minimum glucose amount and, administering a therapeutic action to the user based on the validation of the contemplated disconnection time.
