It’s pretty much what nicola8 just said, and the full balance has to be paid 56 days before the op, they send you a letter with a bunch of info and the exact date you have to pay by.
I had my initial consultation at the beginning of December, then saw two surgeons; one around mid month and one at the end. After my final consultation I paid and booked my op which is now 4 days away so it’s taken just over a month for me. I was offered an earlier date on the 3rd of January but I couldn’t make it (unfortunately!)I think it really depends on the availability of the surgeon; like the days that they work etc because I know that my surgeon, Mr Chantersak, only does cosmetic procedures on a Tuesday.
Good luck!
Feel free to add me xx