Hello, My son is almost 7 months old. He has been having severe rashes on his face and on the inside of the elbow joint . He is breast fed. I have tried controlling my food intake, cant find out whats triggerring it of. He has now started eating stewed apple, pear, mango or chikkoo. His doctor prescribed efficort which is the only thing thats gets rid of the face rash.....just want to know how much can i use it?