I'm so sorry, that is really difficult. I experienced something somewhat similar. When I was about 3 weeks out my mom fell and broke her elbow and I completely spiraled and ate whatever I could, I was depressed and I drank alcohol. So when I went to my 6 weeks appointment they were disappointed that I didn't lose more. However, my dietician tried to not be judgey and try to work with me to get back on track. She looked at my log and told me to stay focused on proteins, vitamins, water, and if I have room vegetables, also finding the formula for miralax so I can relieve constipation. I also didn't see my surgeon I saw his assistant.
Okay so to your question, honestly its so hard. I've been blessed to have a therapist so I meet with her every other week to deal with my mental health because that's part of it. I'm trying to take time to be disciplined, dedicated and intentional. I keep working really hard every day to stick to that book they gave me before surgery and I try really hard not to compare myself to others. Some people bodies are just so different and I keep telling myself to keep going. But the reality is that I still cruise this site to see where everyone else was at this week or that week. And while sometimes it helps me there are a lot of times where it doesn't help.
My best advice would be, if you can work closely with your dietician to try to find something that you can eat without discomfort. Keep repeating that and stay steady and give yourself some grace.