Apologies if my answer has created more confusion to the answer than being helpful.
I was part interpreting Pete's tone when saying Prosise wasn't exactly coming along as hoped. We know how optimistic he normally is re. injuries and what he said to me indicated that there was nothing positive to update reporters with.
Concrete facts are that a) he will be checked again in two weeks and b) none of us really know the status.
My best guess is that the original timeline of at least 6 weeks is now a bit longer.