Hi, you can wait until your buyer does not submit the order requirement and if the order already started and count the delivery time then send them message to submit their requirement ASAP. If the order has not started then you can wait and send them reminder.
Suppose I have a gig for website SEO service can I create one more gig for SEO?
Actually I would like to publish one more modified gig for the same service.
To get order quickly you can research that kind of service which is low competitive. It's just an opinion but I am not giving you surety that this trick will give you order for sure. But you can try and see. Best of luck.