I am so sorry this one did not work.
It is good you have frosties to work with. There are lots of ladies here with success stories from FET. I do not know much about the process but I am sure the ladies here will soon share their knowledge. But as for the timeline, my doctor told me that if the fresh fails, I could immediately move to FET even as soon as my next cycle. So I am assuming if you are ready to move, they can do the FET pretty quick.
Good luck and know that we are all here rooting for you.