Get a CGM with alarms! You could maybe try some herbs that aren't as strong. I used to take a formula that was 1-4 capsules and I would just take one. That small amount did work on me. It was when I was menopausal and I was having an awful time sleeping and was scared of knocking myself out too much. I used to get lows at night sometimes and at the time I didn't know it was because my basal was too strong.
It's very scary, especially if you get lows at night, if you can afford it, a cgm is the best answer, either a Dexcom that has the alarms or a Libre with a Miao Miao.