The reason why you need to wait is because you need to make a business card separately according to the original card number to reissue the original card number. This waiting time is actually the time to wait for business card printing and card delivery.
If you reissue the card number at will, there will be a ready-made card at the bank counter. It is advisable to wait, but it cannot be the same as your original card number. This is the difference.
If you are not particularly anxious to get a physical card, you can ask the bank if you can reissue the original card number. Theoretically, all banks should provide the service of reissue the original card number to see if the bank is willing to serve customers. If so, you can definitely do it, because business card printing is easy and not very troublesome.
If the original card number is especially needed, it will take some time to persuade the bank to handle it for you.
Wish you success!