My baby A was vertex from about 20 weeks on, but baby B was usually breech. Between my u/s at 36w and my induction at 37w, she flipped to transverse. Luckily, the ob who was doing the sono was an idiot and told me she had flipped head down so we were good to go with a vaginal delivery. Since I didn't want a c-section, I didn't correct him that he was looking at the wrong foot.

I delivered A vertex and B stuck her foot out and the doc was able to reach up and turn her from inside and bring her out butt first.
I would say your chances of baby A flipping are still possible.