Yes, thats not an unusual situation. He may have had some fry developing, yet still also have had some new eggs ..
Its really difficult to keep track of what happens here, – but definitely he is doing a job, and the chances that some of the eggs developed is big I think.
I guess with those pairs where theres a new spawning will interupt or disturb somewhat, and maybe thats one reason why some fry leaves the cave very early ??
It may be that he still needs some learning in order to become the perfect father 🙂 .. but there are good chances I think for some fry to occur, so good thing you are feeding.