want to cure my son's egg allergy

My 8 year old son is allergic to eggs and peanuts. Avoidance for the last 7 years has made no improvement in his blood test results. He hasn't had a peanut reaction since he was 1 year old; that reaction was hives but no anaphylaxis.

He has been exposed to eggs several times and the reaction is always rash, upset stomach, and vomiting for several hours. He can eat egg yolks, but any amount of egg white, such as baked in a cake, will cause a reaction. It makes eating in restaurants, traveling, or going to birthday parties very challenging.

When he was 3 days old he was exposed to heavy duty antibiotics because I had a kidney infection and was admitted to the hospital for IV antibiotics. The doctors said it was safe for me to continue breastfeeding and I didn't know any better. Now I attribute his stomach/immune issues to that. He had eczema as a toddler but it only shows up occasionally now, along with a stuff/runny nose due to seasonal allergies.

I am just learning about homeopathy but have been doing some research and my son has something of a pulsatilla personality... shy, clingy, anxiety, nervous about being away from his parents in new situations or losing 'things'... silly things like magazines and such. He's becoming quite a packrat!

We did try a course of pulsatilla for his bedwetting a few months ago and while there was no immediate improvement, 2 months later his bedwetting is mostly gone.

Any advice is welcome. Thank you!

Delinda