Hi Thomas! Congratulations on your massive weight reduction!!! I had my surgery on August 20th, then on Sept. 28th I had emergency surgery for two obstructions in my small intestines; Anyway, I find that I fill up quite quickly too. One yogurt is filling to me also, but, I'm discovering that even though I eat smaller amounts, I eat about every two to three hours. If I don't, I become dizzy, sweaty and weak (hypoglcemic). So, I can identify with your inability to eat larger portions. I hope your pain issues with eating have disolved. I know prior to my surgery on Sept. 28th, eating was very painful for me; Now, it's very rare, only if I eat something too fast, or too dry. Please take care of yourself! Sincerely, Lori Ann