I follow a vegan diet to try to lower my cancer risk of 60% due to a genetic condition.
When I did the switch, the rest of the family did not. What we do, is that I usually have a couple of raw veggies (grated carrots with parsley and a lettuce) or some cooked one (green beans or roasted zucchini) and I would have some tofu/ beans for me , and my family a steak, piece of fish , you get it.
Occasionally, we all have the same meal that is accidentally vegan, A minestrone, in which they would add some parmesan , and I would sprinkle nutritional yeast.
The benefits for me would come not only from avoiding animal protein, but also from eating large quantity and great variety of vegetables, so there is always plenty of that.
In addition, I keep in my fridge a container with quinoa, or black rice.
For breakfast, I often have a green smoothie (kale, spinach, blueberries, flaxseed) or rolled oats with flaxseeds and some dates and cinnamon. Or black bread with crushed papaya
I drink soya milk, because soya is recommended for those with a breast cancer risk. There are many brands, and many tastes.
There is a vegan board on MN and several discussions about veganuaryj. But lately it is very much fake food, ultra processed Frankenstein-food oriented, with fake sausage, fake cheese, fake whatever and if your goal is health, these ultra-processed will likely do more harm with all the additives and process,
You will find however recipes www.mumsnet.com/Talk/vegan
MY piece of advice is not to look for a vegan version of a specific taste you have in mind, but embrace the discovery of a new way of cooking.
Books I recommend are Valter Longo and Luigi Fontana for health benefits of vegetables-heavy diets, not necessary vegan but strong argument against artificial food.
Chances are there are specific recommendation for your autoimmune condition. I selected and made my diet based on Pubmed papers