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Probably not. While time-restricted eating protocols (18/6, 20/4, OMAD) can produce significant weight loss, this often comes at the expense of muscle. Protein turnover continues throughout the day, and some EAAs broken down from muscle cannot be reused due to oxidation.
There are limits to how much EAA stimulus your body can use at one time, so cramming all your protein into a narrow window has diminishing returns. Without taking a calorie-efficient, IF-friendly EAA supplement like OptimalAmino® outside your eating window, there’s a real risk of losing muscle as protein breakdown exceeds synthesis.
Deep dive: Intermittent Fasting and Muscle — Why Your Fasting Window May Need EAAs →