Im back but need support and motovation to keep going

I was doing so good the 6 months in preparation for barbaric surgery, I lost some weight and the diabetes sugar was under control. Surgery was 6/28 and the weeks it took to get back to eating regular food seemed to take forever. Now that I can eat anything and I know I can eat only about a cup of food I've gone off track and stopped losing weight and have actually gained 2 pounds. My long term goal is another 100 pounds but I need to maintain the motivation.