New Puppy Poop Question

So my 12 week old French Bulldog Bacon poops a LOT. I mean 5 or 6 times a day. My concern is that at the end of the day, after dinner he has a regular poop and then a few minutes later it's followed by diarrhea. Then in the morning it's solid again and throughout the day it's solid and then come evening, diarrhea. He's otherwise happy and healthy, eating a ton and drinking lots of fluids. And the diarrhea looks normal brown. I didn't know if anyone else found this to be the norm. And I'm wondering if it's the treats I give him throughout the day for training that's making his stools soft?(Wellness Puppy Treats). Otherwise he eats premium food that the breeder recommended. Ideas? Thoughts? He also had an ordeal last Friday night where he ate something toxic and ended up in the ER, but after a couple days bland diet he's back to his normal eating.