There's lots of natural sleep agents you can try Darren4's suggestion of melatonin which is in the majority of sleep agents, or alone. There's other things such as valerian, gaba, l-theanine, Skull cap, passion flower , sleep chocolate, patches, sleep drink amongst many other things; some have melatonin some do not. Hopefully you'll find one that will help you to sleep and your partner also.

Try melatonin it’s natural something our body is supposed to produce

I take medical cannabis oil, helps me to fall asleep. I still wake but less often. Still up early mornings. I listen to audio books or podcasts when I wake in the night.

Hmm might be sleeping but getting rem? or whatever cant think of it lol go figure. Anyways my doctor gave me sleep medicine long time ago. Ideal is if you get enough rem or whatever it helps.

I assume the 8 cups of coffee is causing the lack of sleep. Discuss this with their neurologist and see what they suggest 😊