I'm so sorry. The reason i have birds is because I am very allergic to cats (especially cats, which I especially love), and dogs, and basically any kind of mammallian pets. I keep air filters running in my house, I vacuum daily, & try to avoid putting my face right against my bird's feathers, because I know that being susceptible to allergies, i am at risk of developing bird-allergies, and I really don't want that.
That said. I think you need to take your doctor's advice. Allergies rarely "just" go away. Allergy management can be possible, and possibly in the future you might get to a point where you might consider getting birds again. This is possible, although unlikely. BUT. Continuing exposure to them now, while your allergies are highly activated, will only make the allergies continue to get worse and more severe.
It is a very sad thing. If I let myself think about cats for more than a short while, I can get really sad, because I would really love to have a cat. IF IF my allergies are really Good, I can spend a little while in a friend's house who has a cat. Even pet & handle the cat, on very rare occasions.
BUT if I even go near a cat, or even go in a room where a dog was & it has already left, when my allergies are already acting up, I will only make things a thousand-times worse.
Likewise, your allergies are currently activated. In the future it might - or might not - be possible for you to make some accomodation, but for right now you need to find another home for them so that you can avoid spending time with the allergens they produce.