Ruling on praying in high heeled shoes

More than year ago I started to have hard pain on my heel bones. And it makes it quite difficult to stand during prayers. My heel bones seem to be flattening and it hurts. When I walk on forefeet the pain goes as the weight goes away from heel bones. Because of that I wear high-heeled shoes at home. But when I remove them in order to pray (even some short prayer), it hurts again, which make me move it a little up when praying. And I can hardly wait till the end of prayer. I know that it’s allowed to pray in shoes. But what about high-heeled shoes? As far as I know, it’s fard that feet should be down to ground when praying. I wear about 10-12 cm heels and I really feel relief and lightness in them, not having any pain. Please, advise me. As I hardly could pray tarawih on Ramadan. I can’t even pray tahajjud because I can’t stay long on feet. I can stand only on high-heeled shoes, so that not to hurt my heel bones.