If the cat will cooperate, a weekly bath can help get rid of excess hair , as well. And, of course, try to keep the cat out of your bedroom. You might also consider buying an air filter . These devices work well and aren't too expensive. Get one for the main rooms in your house, or move one from room to room regularly.
Excessive protein can irritate the immune system and keep it in a state of over-reactivity.
I also recommend taking quercetin , a bioflavonoid from buckwheat and citrus. It stabilizes the membranes of mast cells which release histamine, the body chemical that mediates many allergic reactions. Take 400 milligrams of quercetin twice a day between meals. Dr. Andrew Weil Allergies can make your life miserable. Share your strategy on the Boards.