Your going to need a 40 gallon tank, and about 200 jars or so. and a microworm culture, vinegar eel culture, and baby brine shrimp. Also, 2 2.5 gallon tanks w/ heaters for the female and male. and you will also need a LOT of medications (35$) or else all your bettas are as good as dead.
Next time, do not be impulsive. I'm praying you are very wealthy.
Oh and, a plan to find homes for the babies is also good.
And he is not eating the eggs, he is putting them back in the nest. He doesnt have a basket, so he uses his mouth.