Exporting album in order

Hi

I've developed an album in lightroom which I want to get printed into a photobook. When I export the photos from Lightroom onto my desktop (to then upload onto website that prints album), the order is mixed up as it is organises by filename. I have read that you can't change a file name in lightroom cc (infuriating if true!!!). Any other means of exporting an album in order to save me hours of reordering manually?

Apologies if I'm missing something simple, not something I've done before!

Thanks

Isa