Let them do thier thing. In the past I got some liquifry food for the babies, but it turned out to be a waste of money. They will eat finely crushed flake foods. If you have a strong filter intake you can cover it with a sponge, but Ive never had a problem with them getting sucked up into mine. If there are other tankmates you might want to remove them, as they will get thier buts kicked for any wrong move. These fish are good parrents, and part of thier allure is observing that behavior.