Expert Q&A

Lost 3 and a half kg in my first 3 days…is this normal while doing intermittent fasting: what to track and how to measure progress?

Understanding Rapid Early Losses on Intermittent Fasting and Tirzepatide

Losing 3.5 kg in your first three days while starting intermittent fasting alongside low-dose tirzepatide is completely normal and expected in the 30-Week Tirzepatide Reset protocol. This initial drop is mostly water weight, reduced inflammation, and glycogen depletion rather than pure fat. When you cut grains, lectins, and ultra-processed carbs, your body sheds stored fluid quickly—often 2-4 kg in the first week. The medication further blunts hunger signals, making intermittent fasting easier from day one. In our Nashville clinic, nearly every patient sees 2.5-5 kg drop in the opening 72-96 hours when they follow the exact lectin-free low-carb plan from my book.

What to Track: Move Beyond the Scale

The scale can mislead, especially during hormonal shifts common in the 45-54 age group. Instead, use these four daily metrics that actually predict long-term success in the 30-Week Tirzepatide Reset. First, measure waist circumference at the navel—aim for 1-2 cm loss per week. Second, track energy levels and sleep quality on a 1-10 scale; rising scores signal improving metabolic freedom. Third, monitor how clothes fit and take weekly progress photos in the same lighting. Fourth, request baseline labs (fasting insulin, A1C, CRP, liver enzymes) and recheck at week 10. These non-scale victories matter more than kilograms because they reflect reduced joint pain, better blood pressure control, and reversing insulin resistance.

How the 30-Week Tirzepatide Reset Structures Sustainable Progress

Our protocol uses three 70-day cycles with smart low-dose tirzepatide cycling, never relying on medication alone. You eat 221 lectin-free recipes that eliminate the modern toxins driving hormonal weight gain. Add Japanese-style walking intervals (10 minutes after each meal), red light therapy sessions, and our targeted Detox Drops to accelerate real fat loss while protecting muscle. By week 4 most patients shift from rapid water loss to steady 0.5-1 kg of fat loss per week. The 69 Transformation Steps give you a clear daily roadmap so you’re never guessing. This prevents the two biggest mistakes: depending solely on the drug and obsessing over daily scale readings.

Real Patient Outcomes and What Comes Next

Patients like John, who dropped 11 kg and normalized his A1C in 10 weeks while managing diabetes, followed this exact approach. The first three days are exciting but the real victory is maintaining results 18 months later through chaotic intermittent fasting and rebuilt hunger signals. Focus on consistency with the real-food plan rather than speed. If joint pain limits movement, start with 5-minute walks and build up—the protocol was built for busy, middle-income adults who’ve failed every diet before. True metabolic freedom means your body wants to stay at a healthy weight naturally, long after the medication cycle ends.

💬 What the Community Says

The community shows strong interest in early rapid losses on intermittent fasting combined with tirzepatide, with many 45-54 year olds reporting 2-5 kg drops in the first week and asking if it's "real" or just water. Most practitioners in forums note this is typical and encourage shifting focus to measurements and energy levels rather than daily weigh-ins. A common debate centers on sustainability—some share regain stories after stopping medication without changing diet, while others following lectin-free or low-carb plans describe better success and fewer side effects. Beginners often feel overwhelmed by conflicting advice on tracking apps versus simple tape measures, and many express relief at hearing joint pain improves with reduced inflammation. Experiences vary on insurance coverage frustrations, but consistent praise goes to protocols that include detox support and walking routines over complex meal preps. A vocal minority worries about muscle loss, prompting frequent questions about body composition tracking.
Clark, R. (2026). Lost 3 and a half kg in my first 3 days…is this normal while doing intermittent . *CFP Weight Loss*. https://ask.cfpweightloss.com/ask/lost-3-and-a-half-kg-in-my-first-3-days-is-this-normal-while-doing-intermittent-fasting-what-to-track-and-how-to-measure-progress
Russell Clark, FNP-C, APRN, FNP-C, APRN
About the Author

Russell Clark, FNP-C, APRN, is the founder of CFP Weight Loss in Nashville and CFP Fit Now telehealth. Over 35 years in healthcare — Army Nurse Reserves, Level 1 trauma ER, hospitalist — he developed a 30-week protocol integrating real foods, detox, and low-dose tirzepatide cycling that has helped hundreds of patients lose 30–90 pounds. He and his wife Anne-Marie lost a combined 275 pounds using the same protocol.

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