Beyond getting a Libre 2 (which is a really good option) there are options for dealing with these.
1) This is the most makeshift one. If there’s someone you trust (significant other, family, good friend) have a “check-in” with them. Basically just give them a message saying “hey” before a set time. If they don’t hear from you they give you a call. My dad did for me for awhile when I was living on my own. Usually just a phone call was enough to get me out of unconsciousness. Though, being my dad (and having cared for my Diabetes as a child) he would turn up if he struggling to get a hold of me. This is going above beyond what most people can, though.
2) Have a snack before bed. A small snack around 9pm helped a lot with overnight hypos when I suffered from them whilst I was still on Mixed Insulin.
3) Basal Testing. Don’t know if you’ve Basal Tested. If you haven’t and you don’t know what I’m talking about give it a quick Google. Could just be you need to reduce your Basal rate/dose a bit.
4) Bolus Reduction. I have found in recent years having my ratio for dinner set too high could actually lead to Hypos through the night. This isn’t common by any means but can happen depending on how your Basal and Bolus mesh together.
5) Alcohol intake. Not going to be a prude and say don’t ever drink but making sure I had some Carbs before bed when I had alcohol in me always helped prevent nasty hypos in the middle of the night. Also just stopping drinking as long as you can before bed helps a lot to, that’s the less fun option though.