Hi my baby is on nan2 gold he does very well on...

Hi my baby is on nan2 gold he does very well on it but as he's approaching one year old I've been giving him so good soy milk on his cereal and he's fine but was wondering if any other mums are putting their baby onto soy milk carton style milk? do they still get all the nutrients and calcium with the soy? My baby has a slight cows milk allergy which means he's fine on cows milk formula but anything extra such as yoghurt will bring out a rash, I tried cows milk on his cereal watered down and he got a big rash afterwards, then when I gave him soy yoghurt and milk on cereal he's fine and loves it. Any advice?