I'll be watching this thread too! My DS is the same with soy added to the mix too.
At the moment we do a lot of pasta and bolognaise/veg/nutramigen or squash/nutramigen sauces. Also patties of mashed sweet potato, lentils, celery, nutramigen and breadcrumbs baked in the oven and then frozen in bulk. Fish cakes should work but i can never seem to cook them properly. Various stuffs on toast pates/sardines/capaonata on toast, DS's favourite is mushroom and borlotti bean pate (onion, garlic, and mushrooms fried then boiled with beans and dried mushrooms before being blitzed and frozen in cubes). Have you tried falafal, hummous or chunky stews (floured and fried off beef, onion, ale, carrots and new potatoes in a slow cooker). We also do chunks of boiled potato and fishfingers, dairy free sausages or mini burgers (batch cooked then frozen pork and apricot or beef with tomato puree mixed in as a splodge of tomato puree means anything will go in ds!). We did do chicken burgers but these seem to have bought up his egg allergy recently so I think the chicken I bought must have been contaminate. Nutramigen and slow roast tomato polenta sticks have also been a success (boil up the polenta, leave to set and then shallow fry in chip shapes as required). If we are out then I give him a diary free ham/beef and tomato puree sandwich or apple and pear spread (look in a health food shop) if I really don't have anything else in the house.
Puddings tend to be a very stiff dollops of coconut rice pudding (pudding rice, teaspoon of sugar, can of coconut cream, vanilla essence and more nutramigen cooked until almost dry so lots of stirring so it doesn't burn, then frozen in ice cubes of course!), bought fruit and/or oat bars and fruit. I think the banana soreen would be ok too. Ds also has a chunk of fig and date bar from holland and barrett, I tend to smuggle his omeprazole in with these as he loves them.
If your baby can do pincer grip then baked beans on toast can become a very slow meal! Baked beans are the one thing my ds tolerates by spoon.
In terms of breakfasts we do raisin/apricot/blueberry/cranberry wheats or blueberry/banana/apple and cinnamon egg free pancakes made with the lovely nutramigen. I am sure you have guessed now that I batch cook the pancakes too!
I generally have some tescos bread sticks in my bag as emergency snacks as they are dairy and soy free.
Please let us know what recipes you end up doing, it feels impossible to think of meal ideas sometimes. Even more so ones that we can share so I would love some more ideas.
Happy cooking!