I hate to tell you this but you are much too dependent on an “alert system” that’s too complex to be reliable. There are too many ways it can break down: the phone, the sensor, the software, the bluetooth connection. Added to that, CGM is inherently less accurate, slower to detect changes and less reliable than conventional blood sugar testing. I would reassess everything you are doing in your daily routine that led to you winding up in the hospital, including diabetic unawareness. You need a better system and I doubt that any CGM is the magic bullet here.