I made a homemade fry container so I could keep better track of my Molly babies. I used a sherbet container, cut big holes in the sides, and stuck it down inside a knee high pantyhose. Then I hotglued two suction cups on it and stuck it in my tank up high. That way they can share the tank water. I left them in there a month. They're easier to feed that way too! Good luck!
Okay... Well, it's like feeding a baby every few hours... More you feed them the healthier they are an faster they grow
I have my fry in a separate tank and have never raised in a main tank, so maybe my situation is different than yours