Regardless of the amount of pods you have, get yourself a magnifying glass and a red lens flashlight and look at night an hr after lights out. It should look like a free for all. Then, supplment with different foods, and at feeding time, turn your pumps off, put food in the same place each time and use your magnifying glass to watch what the mandy eats. Picking does not mean chewing and swallowing. Picking isnt eating. Keep trying other foods until you find a few it actually chews and swallows. Also keep buying and supplementing pods. They wont eat the large ones. If you have enough of those they can keep making the babies mandy eats. I got mine to eat frozen by making what I call fish soup. A mix of arctipods, rods food, brine shrimp, spirulina brine, caviar, and a couple pellets. I purposely overfeed because of her. Do frequent water changes, and make sure it has NO competition for food.
If youre diligent you can make it happen. If not, it will die.