If the male has been in there for a week, – then he has guarded the eggs while they developed into larvaes to the point of them becoming free swimming. That is to my experience what happens during the first week.
Normally, – but I would say, not always, does the male stay and the new fry stay in the cave for some period more, – a week, some days, – but not always. My linkie male was the same, – they hatched, became free swimming and was gone ! But they showed up after some weeks again.
So if I were you, I would feed as if there were fry in the tank now.
Its unlikely that he ate them, – they are of course in danger from other fish in the tank, or the female, – but some will probably survive if you have enough shelter for them.
But you say you controlled the cluch two days ago and all seemed well … how did it look at that time ??