We switched LO to soy thinking she may not be able to tolerate the lactose free formula. So far she's been doing well and not fighting her bottle. She would eat 5-5.5oz of the sensitive formula every 3 hours. This morning she took 5 and then 5.5oz, but this evening she's only taking about 4oz. I'm wondering if the soy formula is more filling and that's why she isn't eating as much?