Personally, I would consider the minimum between contact times to be a full business day, but in reality I'd usually wait 3-5 days. That said, I have never been

Personally, I would consider the minimum between contact times to be a full business day, but in reality I'd usually wait 3-5 days. That said, I have never been in your position where I was short on time and options, so I would probably have done something similar if I were you.