You're lucky you can tolerate wine! I miss having it with meals.
I know I'm rather new here and I don't know you that well, but I don't know that drinking wine to help you relax or sleep is a good idea--especially if you're suffering from anxiety. I'm not saying you would become an alcoholic, from what I've read you come across as a really strong, smart, and responsible person, but I do worry that the alcohol might eventually increase your anxiety and disrupt your sleep even more. I'm also suffering from anxiety; so, I wake up a lot during the night worrying, thinking. I've found that taking the time to write down my worries and anxieties before I go to bed helps a lot. I recently started an anti-anxiety medication (short-term treatment), which I wouldn't recommend for everybody, but (after trying self-hypnosis with a counselor, self-help books, and such) I realized I needed a little more help to get me through this time.
I hope you find something safe that helps you! Isn't it the worst to wake up in the middle of night? It can feel so lonely and frustrating!