In reading through the 34 comments I don't see any mention of going longer without food (fasting) to address autoimmune and inflammation issues.[0]
Ethics: the best I can say is "that's cultural", and often personal. We're all doing whatever we want, and sometimes our values align enough to get along for a long time. I ate a lot of meat for about a year (or so; I didn't keep a log) and then stopped for a couple reasons, including environmental impact. I grew up on a farm, I've butchered animals and eaten them, I've hunted, and I see every living creature as an individual person worthy of respect. And still I kill them. If we were more honest about this when we go to war I think we'd be better off, rather than all the othering and dehumanizing that is so effective.[1]
My internet-stranger advice would be to practice going without food for longer and longer (it took me about two months to go past the ~48 hours when autophagy starts; I paced myself so I could keep an even keel at work (parenting/homemaking)), and then break your fast with an amazing meal, starting with foods high in fiber (something about how the food progresses through the intestines, and absorbing nutrients, and not spiking insulin), and including whatever you want (I only want high-quality, healthy food for these meals, maybe ending with more carbohydrates at the end). Meat seems like a reasonable inclusion if eating fewer meals. Fasting and feasting is different than calorie restriction; the former I find empowering and self-respecting, the latter I found torturous.
In any case, I hope you figure it out, and good luck!
References:
[0] Life in the Fasting Lane, by Jason Fung, Eve Mayer, and Megan Ramos
[1] On Killing: The Psychological Cost of Learning to Kill in War and Society, by Dave Grossman