Hi,
my daughter had some food intolerance's and we had to remove all diary, gluten and eggs from her diet for a while
we swopped cows milk products for the following items:
-Woolies goats cheese, its like a soft cheese and takes a bit of getting used to but my daughter loved it after a while, spreed on a cracker
-As Deja said don't give too much Soy as it can become an allergy, but try woolies soya yoghurts (we limited it to one every second day) especially if you using rice milk and goat cheese they aren't getting soya from other areas)
-Woolies rice milk
otherwise try making some other non diary snacks like homemade corn muffins (no salt) , nuts and fruit , crackers, cold chicken drumsticks , homemade meat balls etc
good luck, I know its tough, but once you get into a new routine, its fine