<human>: This is my first post in this subreddit and am using mobile so I hope I am posting correctly! Also throwaway because I'd prefer that my family not see this:) Not sure how to add flair from here either but here goes:

My step-mother [37f] and I [29f] get along well.  What seems to be the issue is since she had my half-brother [2m] she has become quite strict with what he is allowed to eat.  He does not have any allergies but cannot eat anything containing gluten, cow based dairy options (cheeses, yogurt, milk etc), sugar, certain foods must be organic (such as apples) others are allowed if not organic (bananas) the list goes on and on.  It's hard to keep track.  These same rules do not apply to herself or my father or any guests.  I have been a guest at their house many times and the adults enjoy an average diet.

I do not live along the same strict guidelines.  I eat an average diet and limit processed and junk foods as best I can. I will be living close to them next year and hope to spend more time with my half-brother but I struggle with his food limitations.  If my half-brother had legitimate allergies I would not hesitate to follow dietary restrictions to the letter.  

My question is how should I handle this situation? Do I cook separate meals at my home for the two of us if he visits? Should she expect that her son will be out in the world soon and exposed to these foods eventually? Do I ask her to prepare any and all meals he may need while visiting me? 

I understand that every parent has a right to do what they wish for their child.  In their home with their son they are free to do as they wish.  My concern is how do we go about this in my home which has a completely different set of expectations? 

Thank you for any and all advice!

Can you give me a shortened version of the text?
<bot>: My step-mom has crazy strict food rules for my half-brother (he does not have allergies).  How do I deal with him coming to visit me if I do not follow the same restrictions?