If a chronic disease has already begun, lifestyle change isn't a quick fix, as in making some changes will yield a result right away. Working with the theory that autoimmune disease is the result of how your body responds to toxins, diet and various environmental triggers, it takes many years for the disease to present itself, therefore can take months to years to see the results of the healing process. It can seem difficult to make seemingly radical changes to your life and not feel the reward, but it is important to stick with it. For Dr. Wahls, it took her 9 months after her lifestyle changes to start noticing small improvements in her disease.
The unfortunate part is that you can't change the air you breathe or what is in your tap water. There are those things that can be controlled and will make an impact on toxin exposure. One way to decrease toxins is through your food and cosmetic/hygiene products. Read the label, if there is a long list of unpronounceable ingredients, its probably not so good. Buying whole foods, organic produce and responsibly raised animal products will eliminate toxins that you would be intaking directly. For cosmetic and hygiene products, I use this helpful website called Skin Deep, there's also an app! I search for a product before purchasing it to see the rating and the ingredients of concern. On the app, you can scan a barcode if you're already out shopping and need to check a product.
I won't get into nutrition advice for autoimmune disease in this post, but there are plenty of resources that can provide additional information. Dr. Hyman's website is a great resource to start.