What type of pods did you get? Most stores sell tigger pods which is the little bottle of tiny red pods. I find those almost completely useless.
Algae barn sells bags of tisbe and tigri pods which are much more likely to propagate well in the tank from my experience. The pricing is pretty reasonable and you get a solid starting supply:
https://www.algaebarn.com/shop/
I'd order a bag of those while you work on getting the mandy to eat frozen/flake/pellet food.