Judt wait. The important things are not the egg will drop or not, but will the male fertilize the egg. Many times i've fot fooled by the male. He's just boring and have fun.
It's more easy to look if the females it's times to breed. But the male? Still mysterious to me..
Just patient, sometimes last 1 hour or 2 hour, but it's can be longer to 4 hours. Depend the female how many eggs or the male already bored.