To be honest, you should separate the male and female if they are breeding that much - - females should only be mated UP TO 3-4 times a year for her health, she CAN be mated to death.
How big is the adult's tank and how many frogs are you planning to house in it?
I understand how 3 tanks can seem like a lot but if you put them in to soon they can be eaten. I would say maybe Christmas time you could compare their sizes as a possibility.
When breeding, I had my 72 gallon adult tank, multiple 10 gallon breeding tanks and four 30 gallon tanks for them to grow up in. It can be very time consuming which is why you have to decide if you can do it - - I personally am cutting back on breeding due to the amount of time it takes up.
Your froglets should not be fed 3X a day, that is excessive! Once a day as young frogs and every other day as adults is fine. How many babies are you feeding 4 cubes too?
Also try switching their diet to HBH frog and tadpole bites to give them a more balanced diet. You can have "spoiled" froglets if you feed them only bloodworms.