Hi,
What kind of an eating disorder are you diagnosed with?
Have you consulted any doctor?
Your ideal body weight should be 67kgs.
Adding healthy fats and high biological value proteins to your diet, eating what you love, and cooking food to make it palatable as well as treating your condition and staying positive and stress free can help you achieve that.
Next Steps
Consult a dietitian for detailed diet chart tailor made according to your habits and condition.