They do not need to mate each time between eggs, I believe she stores the sperm needed. Although often they do mate multiple times. I had a male go mia after the female laid her four egg clutch one year. He was gone four entire days, returned late morning of the fifth day. In that time I trained her to a mealworm feeder since she was incubating and he was not around to feed her. She then trained him to the feeder. I have heard/read they could be off mating with other females. Hope you see him soon.
Donna in WI