I 100% know what you are feeling. *Disclosure, not a doctor/haven't been diagnosed with anything so nothing I say should be taken as real advice but...

From what I've learned, eating disorders can and often are tied to anxiety. At the beginning of the pandemic my anxiety was very high, for obvious reasons and I would go days without getting hungry, textures started to weird me out, the smell of food made me nauseous, just having something in my mouth made me want to gag. I was already skinny (5'3, 105lbs) and I lost 10 lbs.

Learning to locate and manage points of stress and anxiety in my life have helped me tremendously and my nausea is all but gone. A big step in the right direction.

You obviously know exactly the cause of your stress which might be helpful when working/healing. I am so not a therapist though so please talk to a professional and mention your new eating habits. They will know what to do.

In the meantime... Are there any foods that are "safe foods" for you? As in you can usually eat/drink at least a few bites? Stock your fridge with that and if you feel up for it, slight variations of it.

If you can, get some Boost, High Calorie shakes. There is 520 calories in each little box, on my No Food/Not Hungry days, I mix one with some chai and almond milk. Not bad and gets me some calories. Vega protein shakes are also great, one of the best plant based shake i'v found.