Night eating

I wake up during the night with nausea due to low blood sugar and acid reflux. I need to eat something to go back to sleep. But I am afraid that eating and going back to sleep immediately will lead to cavities. I don’t want to get up and brush my teeth as then it will be hard to fall back to sleep. Ideally, I just want something I can grab from my bedside table. What is the best thing for me to eat to avoid ruining my teeth? Anything else I should do to protect my teeth? Thanks!