Are You Gaining Weight During The HCG Maintenance Phase And Want To Know Why? After completing an entire round of the HCG 500 Calorie Diet with HCG Shots, Pellets or Drops, you will start Phase 3, which is also known as Maintenance . The Maintenance Phase was specifically designed to help you Stabilize and Maintain your new lower weight. If you did Phase 2 correctly, Maintenance should be fairly easy. However, if you ran into some problems or found it hard to stick to the HCG Protocol, Phase 3 might be a bit more difficult. But be that as it may, most people will still be able to successfully stabilize and maintain during this phase despite any problems they experienced during the VLCD. The most difficult situation to try and deal with is when you continuously gain more than the 2 pound limit during Maintenance, especially when you don't understand why. 12 Reasons You May Be Gaining Weight During Phase 3 Maintenance: Eating Sugars and Starches during the first 3 weeks ...