If the tank with the fry only contain the parents, I'd say to leave them all for now. If not I would suggest moving them all, parents included for atleast 6 weeks or so.
Feed live food, I've been using freshly hatched brine shrimp. I would also suggest regular 20% water changes.
I had a set going for a little over a week and they were doing well but I had to plan and execute a baby shower for my lovely wife and i didn't get to feed them for 2 days. They died from starvation. I was really disappointed but given the track record of my pair, I expect another spawn shortly.
This time i'll also be using the Repashy "Spawn and Grow" to allow them to feed basically all day at their will.
Best of luck you.