Lets not start attacking each other since we’re all here to help each other and grow the community afterall...
As for feeding there is no real definitive answer... if you look at nature they may even go days without food where as with some aquarists they like to power feed to get their fish to grow faster...
so overall i would say a nice healthy balanced diet would probably be your best option, whether it be night crawlers, crays or other food sources such as pellets...
eitherway, good luck with your puffer and post som pics as he grows??