Nelli is adorable.
I actually had the same problem with Sammy, and took her to my vet. She was given a special cream that works really well on healing the sore hocks. It’s worth it to get some from your vet the first time, because a tube will last much longer, heal it fast, and you’ll have it for later. It’s called Avi-X Soother Plus Cream. (Prescription, I think.)
My vet surprised me because the soft, cotton sheet I was using on the bottom of her habitat turned out to be TOO smooth! I found it hard to believe, but she told me to put down flooring with texture, and seagrass mattes, the thinner, smoother ones, were best. I got a half dozen and lay them out, tying them at the corners with sissell string because it isn’t harmful if chewed. Sammy’s feet healed quickly, and she hasn’t had a problem since. I left some soft flannel in there with her, but she uses that as a pillow and prefers the slightly textured seagrass mattes on the floor. Apparently, the texturing of the floor, like the ground, keeps their feet tougher with dead skin sloughed off so they stay clean. I think I have that right. Anyway, it worked, so, in answer to your question, being soft enough is not the solution. Hope this helped.