Welcome Chadni,
I was surprised to see more posters talking about another BCG shortage. It has been off and on for a few years. You are smart to be checking on other sources of BCG as Atlanta is such a massive city some offices I would guess have some. I also found it interesting that your URO diagnosed CIS BEFORE your TURB/pathology report. One simply doesn't know what is going on until that path reported.
Some quick observations. First, you do need to have your bladder heal before getting BCG. Customarily that means waiting 6-8 weeks because of the burning/cutting done. So you have some time to pursue other sources of BCG which would push you out to late February early March. Second, a CT scan is often done of the torso to make sure there is nothing else happening in the urinary tract. I would have that done as that is a usual part of the diagnosis. At the same time, there is some mild concern about the radiation involved in this test. Most that monitor this board have probably had this including me. You just don't want this done very often.
As CIS is always considered high grade, 3 months probably won't make a difference but, who knows? You don't want to linger any longer than you can. If you still can't find BCG there are alternative agents. Different chemos are instilled just like BCG. Some cocktails involve heating these as part of the treatment and that is new. There are several discussions about this 6-18 months ago on some threads that you may want to visit on this website that will do better than me trying to paraphrase what was discussed. Edit added: Here is one that is good:
bladdercancersupport.org/forum/8-non-invasive-superficial-bladder-cancer-questions-and-comments/47198-switch-from-bcg-to-gemcitabine-and-docetaxel.html
Keep posting as you go. We all learn from each other.