Definitely NOT 3 times a day!! Especially puffers! If you are feeding your porky 3 times a day, you better be giving him tiny TINY amounts each time, or else you're gonna end up with a fat puffer, and a HUGE ammonia spike. Porkys are POOP machines.
I feed mine 3-4 pieces of krill once every other day. He is about 4 inches long and a chubby guy. I couldn't imagine feeding him 3 times a day.