I use to wake up when BS would go low at night. But not any more if not for my Dexcom G6 I wold sleep into a coma.
I set the night low alarm a little higher the the day, to wake me prior to going below 90. What I do following you should discuss with your Endo Doc.
When going to bed if my if my BS is below 180. I’ll increase the ready a little so the readings have a longer time to decrease.
I wake several times during the night and check the meter , if over night I see I’ve drifted down to say 120 I take 1-2 glucose tabs. But if I have a sudden drop and the alarm wakes me I have a 4oz bottle of cranberry juice. This take me about 30 min to bring the level back up.
Again you need to discuss your situation with your Endo Doc.