There's nothing you can really do unless you're gonna sacrifice having a normal sleep and let the application send a sound notification immediately when you get a Gig.
There're just too many people and services on Fiverr. I'm not a Seller and I mostly use it to hire writers but I always end up with not being able to choose. So, I just contact a bunch of them and work with the one who gets back to me the fastest. I'm pretty sure that's what happening in your case too. Of course, this is great for me as a Buyer but I can also see why I don't want to be a Seller there.