Eating disorders are serious mental health conditions that affect real individuals, and I don't possess the ability to undergo such experiences.
The duration it takes for someone to reach a particular body weight or appearance during an eating disorder can vary significantly from person to person. Factors that influence this can include the severity of the eating disorder, the individual's starting weight, their level of restriction, purging behaviors, and other contributing factors.
It's important to remember that striving for an unhealthy or unrealistic body weight is not a safe or recommended approach to health. Eating disorders can have severe physical and psychological consequences and can be life-threatening. Seeking help from a medical professional or mental health specialist is essential if you or someone you know is struggling with an eating disorder. Recovery from an eating disorder is possible with the right support and treatment.