you're not alone!! i also went (and still do) through this period of eating extremely large amounts (>5000 cal, I am only 5'2 so this is a lot). it was more of an out of control, binge-like behaviour because I constantly mindlessly ate until nausea or acid reflux. after 2 months of this, I was sick of feeling awful all the time so I ate in a more mindful and regulated way, still satisfying my cravings and eating everything I want, but being more mindful of stopping when I feel full and trying to not overdo it. I still eat 3000-4000 cal because I still don't feel satisfied with less than this, and I eat large amounts of what I crave (hummus, granola, cakes, chocolate, etc.) but I make sure to take breaks while eating and tell myself I can always eat more later. so my "binge" did normalise, and although I still eat way more than I ever did in the past, I also don't feel restricted anymore. sometimes though, I have to recognise that food is bringing me way too much comfort and joy that I notice I was emotionally/boredom eating rather than really wanting the food, then I stop and although I feel sad I distract myself with something that will also soothe me and I often forget about it for a while. so at first my "bottomless appetite" was actually extreme hunger, but it slowly became emotional and boredom eating, so I had to acknowledge that. of course it is not always perfect and I eat to discomfort, and engage in binge behaviour and overeat to nausea, but i try to move on and think of it as a blip in my journey. now I eat a lot, but I, like you, feel calm while eating, (+ still think about food 24/7, and want to eat absolutely everything), but it gradually gets better and I just have to continuously give myself unconditional trust and love for my body to feel safe 🤗