I certainly don't wait three months for allergy remedies to work, and I would be very inclined to seek additional homeopathic help. The symptoms didn't show up overnight and are not going to go away overnight. I did not believe this until I learned to do some of it myself, with repeated successes. He and my son have dairy, smoke, and other food allergies that she has also treated successfully. But, treatment is different with each person and situation.
Successful treatment is based best on hitting the source of the problem.
It is my understanding that electricity, temperature fluctuations, light, and mishandling all lead to reduction or elimination of potencies in remedies. Find someone like that by contacting the National Center for Homeopathy or some other like facility. Please keep in mind that I am not a practitioner or homeopath. I simply enjoy sharing my success stories and resources where possible. I would like to make a comment about the prevalent attitude regarding licensing homeopathic practitioners.