I have read about folks taking their
Lantus shot in the morning or at night or a partial dose at each time. If you were taking the
Lantus in the morning and "crashing" overnight, then talk to your doc about taking it at night instead -- then the timing of any drops would be while you're wide awake and able to test & treat. If you had been taking it at night (which is what I'm guessing, given the timing of your "drop"), then shift to the morning.