Is this about hexane? If not, this is really a question for you to ask your doctor/pediatrician.
I don’t think you were adequately informed. While some are touting soy as a “killer”, I think they are a little out of control. I tend to side with the moderates, who say that soy may not be the miracle food it was once thought to be, but there is probably nothing wrong with consuming a moderate amount on a daily basis. Just don’t overdose on the stuff.
Definitely ask your doctor.