That's fine. You could also feed fry food if you want. If you are feeding flakes, you may want to suppliment in some BBS just to give them a little more protein. Remember to feed at least 3 times a day, preferably 4-6.
I feed my fry liquifry for the first couple of days then I crush flake food into a fine powder and feed them that. I also feed them every four hours for the first week reducing it gradually as they get older.