Hi, I don't think there is a right or wrong answer to this, as every bully is different and everyone's daily schedules are different. Some bullies eat once a day and do well with this schedule and others like my Dozer will throw up if he doesn't eat twice a day. I find that if they are fed only once a day it's a long 24 hours before they eat again and that can also cause tummy upsets due to being hungry, some bullies will throw up. Having said that every dog is different and some will do fine with once a day feedings and can eat 2 cups of kibble all at once, instead of divided, also some people have work hours that don't accommodate twice a day feedings, and once a day feedings work better for them. You can try once a day feedings and see how your dog does and if he does well with no issues and this works better for you, then it's fine, you will know what schedule works best for your dog.