Hi Nervous Puppy,
I would give it more time. I have worked for doctors and have been the medical assistant that had to find and copy patient's records. Unfortunately, it can take a while.
I don't know how they do it anymore but back in "dinosaur days" (before computers and fax) we had to take the message off the voicemail, find the chart, put message and chart on doc's desk. Next, Doc would have to find time to look at message, indicate which pages of chart Doc wants copied or sent...then that would wind back on my desk among other such requests for copying and mailing.
Since your old T is also battling cancer, you say?...This entire process might, indeed, take longer. I'm sorry they haven't responded in a more timely fashion.
Hope this helps.
Pre