Talk to Pediatrician on Eczema On Skin

Hey doctor... My baby developed Eczema when he was 2 months old and now he is 4 months old. We went to so many pediatric and even dermatologist for his Eczema condition and every doctor prescribed him Hydrocortisone, emollient, aquaderm, and mometasone furoate cream still his skin is not recovering.. i am keeping his skin moisturized all the time and i have also quite dairy products, nuts and egg as i am breast feeding him... please help....