Festeris
You need to come down by 1/2 a mg a month. Sounds silly, but you are at a critical point and the significance of even a tiny drop in pred should never be underestimated.
Get some 1mg pills as soon as you can. And always alternate for at least a week with each drop.
I had itching as well. It was awful. You will just have to bear it.
Also, get your cortisol level tested at 9AM - and dont take any pred before the test. You will then find out if your adrenals are making sufficient cortisol. If they are not, you will have to stop the taper for a while.
Good luck