I have T1 and have had it for 30 years. From your previous posts, I know your DS has a pump and the low blood sugar alarm I am assuming is a CGM?
I think it is concerning that what you are describing about these late night episodes are the rules whereas these late night episodes should be the exception if his bolus and basal settings are accurate and carbs are being counted and bolused correctly.
I know you weren't asking about T1 management but from your post I am more concerned about that as a T1 myself. Does his endo know that you are waking up multiple times a night for care? With a pump and CGM like I said those should be exceptions not rules. And I do know that there are outliers that cause BS to get whaky even with appropriate care but those should be outliers and not "your normal".
What does your DS's endo say? How often have you seen them? Are you sending them pump and BS readings on a weekly basis for necessary adjustments?
Mama to my sweet lil girl (Summer 2010)