Hello, I would suggest that you carry on as you are and watch for changes in weight over time. If they start to look chubby or skeletal, then moderate what you're giving them accordingly. They should have a bit of a belly, and their heads shouldn't be larger than their middles. This page has a picture of an under fed ADF.
FAQs About African Dwarf Frogs, Foods/Feeding/Nutrition
In my experience it's difficult to feed ADF's too much when there are fish around, but maybe my ADF's are just a bit slow.
I'm in the UK and I bought these frog pellets:
Pollywog
My frogs were much happier once I started with these - the dried bloodworms the fish shop suggested didn't seem to be giving them enough and they were getting quite thin, and the frozen worms were a bit of a hassle. I found multipacks of different frozen things, so that's an option to vary diet. I've heard it said that oil in the sinking pellets isn't great for water quality, so make sure you're keeping up with your water changes.
That said, I have to be careful my frogs actually get the food that's intended for them. I've resorted to using a large rolled up tube of acetate to (very carefully) trap my smaller ADF on a pice of bathroom tile in the corner of the tank to make sure he has time to get the food before the fish move in. I also have to split the pellets in two because they're a bit big for his tiny mouth. He's a bit of a rubbish frog when it comes to finding and eating the food. Usually he finds a pellet's worth and the fish get the rest.
I hope that's helpful, good luck!
