>>81921818You are basically asking if you could lose at least one pound a day over the course of the next three weeks. Even the most restrictive OMAD diet will tell you to be realistic and only expect to lose 2-3lbs every week. Your only option to get the weight off in less than a month would be to fast, and I mean we're talking DRY fasts here, where you don't even drink water and are borderline sedentary because your body cannot do much more than stand and shamble around.
Is it realistic? Yes, if done safely. Will you hate yourself? Also yes, and like with the cosplay fucker anon you're gonna have to commit 100% because again, there isn't any other way.