As long as the parents are not eating the fry I would leave them in together until they start there pre spawning rituals. How large are the fry now? I usually split the fry and parents apart 3-4 weeks after they have hatched and parents are once again ready to make some babies. BTW, welcome to monsterfishkeepers.com
I have a different kind of that have breed twice now the 1st time we left her in for about a week after she let them out of her mouth, the 2nd time she had eaten haft the babies before we knew it. Take them out as soon as possible. Trust me they will be gone.