Bulldogs World

Hi Guys I'm new to this website I have a 11 month old bulldog. We were feeding him iams puppy food but he stopped eating it after we kenneled  him for 4 days. We figured we would just change it since he's going to be a year. Switched to fresh pet and it was great but expensive. Got rid of all problems no shedding etc. I then researched and decided to make homemade dog food containing ground meat eggs with the egg shells for the calcium and brown rice. Also I got dinovite and lickochops for the supplements. I fasted him for a day before giving this to him and slowly introduced it to him. He's had on and off diarrhea. I researched more and they said brown rice could cause it. So I switched to white rice. I didn't fast him because I figured all I was switching was the rice. He pooped alllllllll over our house!! We gave him Imodium and he hasn't pooped since yesterday morning. I then fasted him again and today introduced the new food to him without the supplements. Anyone have any ideas on what it could be? Waiting to see if he's going to have diarrhea again today.. It's killing me I feel so bad I hate fasting him too. He's also acting completely normal other than his poop. Any ideas?!?