Hi OP, I'm dealing with a similar issue. One of my Azure layers was limping yesterday. Best way to catch is with a towel, just toss it over them and they freeze.
I've given her two soaks, use a hair dryer to dry her, she likes that.
I have her in the brood cage. She isn't eating or drinking at all. That worries me. And she just sits.
I cleaned her feet. One foot is def more swollen in that area where a bumble would be. But it does not look pronounced. I will check again for a bumble spot.
But its her demeanor that concerns me. Is this common for a chicken with early stage bumble to not eat?
She can not walk on the foot, that is clear. But she did eat yesterday at the common feeder. Had her in over night and she is still in.