Hi
I know your predicament
I have been married to my T1 husband for 37 years and ironically, developed T2 myself a few years ago.
We too had many incidents of Hypos. And we've had the fits too. In his case in a supermarket with just our (then) 4 year old with him. I had drilled her and she was able to tell the First aider all about Daddy. they called the ambulance and all was eventually well. 25 years later, he's still with us and she's now a married mother herself, who doesn't actually remember the incident.
We've had a more recent bout of hypos, which have now stopped( I hope) It included a night time one which ended with me having to pull my very large husband out of the bathtub, into which he'd fallen and got stuck. He was unhurt.
The answer for us was to reduce the insulin and keep monitoring until everything came back into balance.
I have now convinced him that Bernstein's doctrine of small numbers is the safest plan. His sugars are now usually in the safe range and insulin doses are about half what they were.
What regime for indulin does your husband use? If it's bBasal/bolus, you can try reducing the night time background dosse. Keep monitoring and it will be safe. If the Nurse doesn't like it, tell her that the present regime isn't safe.
Lucosade is my husband's hypo remedy of choice. I carry Glucose tablets, but he hates the taste. Jelly babies are good too.