Do you have another male you could breed?
One idea that comes to mind, is breed another male while breeding this fella. Scoop the eggs into the good father's nest, and he should take care of them.
Another thought... When does he start eating eggs? Keep him in, until you see him eat the eggs, or before the time frame he starts. I've done it
For the females, use teak leaves to condition them. Same leaves used for fighters, Indjo I believe was the one who suggested them to me! I'll use them for my plakat female when breeding my giant... They strengthen the scales, which will help keep her safe from rough attacks.