Absolutely normal! Until he is closer to maturity, he'll probably go in the morning, at lunch time, at dinner time, and right before bed.
Just a warning: Anecdotally, Corgis seem to have very funny pooping habits. Mine are well into adulthood and will generally go 2 or 3 times each on a walk, both AM and PM. In addition, if I take them out at odd times they will frequently go even if they would have been ok holding it if not given the opportunity to go outside. Not sure why, most other dogs I've had go once or twice a day depending on their eating schedule.
Mine is the same way - once he is outside & runnin, things get movin!
he's almost 2yo...
I say completely normal.
My pup is 5 months (almost 6 now) and she goes even more frequently than that. She's more like what Beth's corgis sound like. She'll go out and poo, then come back in and poo again within 15 minutes. Then she sometimes goes a third time within 5 minutes of the second poo. If we're on a walk then she goes at least twice with an occasional third once we get home. We're having a heck of a time housebreaking her as a result, but she's getting there a little at a time!
I am no expert, but it seems like with their long little bodies, they have extra room for intestines....and they seem to make use of all the available space! I happened to see an x-ray of one of my corgi's (thanks to her ingestion of the rubber ring off the bottom of her bowl) and I remember thinking, "Oh. Now I see why they poop so much!"
Franklin goes between 3-6 times a day, depending on how many walks he gets. He goes pretty much every walk even if its just a teesy weensy bit. It seems like some kind of survival instinct for corgis! Lol. Its like wild mustangs will drink at any creek or river they come to, a corgi will poop on any outing! And regarding food, Frank has been on EVERYTHING and I mean EVERYTHING from Beneful, to Purina, to Science Diet, to Wilderness to Wellness to Raw to store bought raw, and now on Taste of the Wild. His pooping habits did not change one bit with a change in diet, only thing that did change was consistency of poops. Sounds like corgis are just little poop machines!