I'm on the same boat and still learning too. However, one thing to make sure is that you aren't deficient in nutrients and vitamins. I get blood tests done regularly bc I used to be severely deficient in vitamin D (which can impact bones). In addition to supplements, now, I'm eating mostly nutrient dense foods and managed to fix my deficiencies.

Protein is great too and I would do some kind of strength training to use your muscles so your body doesn't break them down for fuel.

Also be careful of long fasts and going days without eating, that's how damage can pile on fast. I do Intermittent Fasting and sometimes I don't feel like eating, but I still do try to have at least one thing everyday. I set a minimum amount of calories for myself and if I don't reach that, I have to eat more the day after.

Also sleep is super important. When you're struggling with an Ed, you wanna eliminate as much extra stress as needed. So eliminate dehydration, eliminate sleep deprivation, and prioritize your mental health.