She looks like she's showing progress, but like you said, not in the udder. But that can fill just before foaling or right at foaling, so she should be fine. I'd let the vet know that she's moving ahead with almost no udder, just so the vet has a heads up and can be prepared with a shot to bring in her milk....just in case.
Baby still laying a bit sideways, but moving forward. So, all is looking good.