I’ve had a dog living with ulcerative colitis going on 2.5 years now. The particular type he has is an autoimmune condition, but colitis in general is irritated to a great degree by dietary fat. I don’t know which formula of Earthborn you’re currently feeding, but several of varities have the fat content around 18%, which is obscene :/ I would suggest keeping fat levels somewhere around 10%, possibly lower. Fat lubricates the digestive system, and a dog with colitis does not need any more incentive to go.
You might also want to ditch the baby food. It’s not suitable for this type of condition, unless the dog is physically unable to take solid foods. Overcooked chicken or lean beef with white rice should be offered for a day or so, just to give the digestive system a rest. Bone broth is also a great way to get in nutrients.
The experience I’ve had with colitis is that it is entirely food dependent. Bad as my dog is, he will remain entirely asymptomatic so long as I don’t change his dry food. Certain feeds also seemed to not just irritate the colitis, but cause further inflammation that led to kidney infections/blood in urine and enlarged prostate 🙁 So I learned the hard way that yes, food is a major – sometimes the only – influencing factor.
Thus far, my dog with UC can tolerate no other dry diet except for Pedigree. He literally went from 6 months of going upwards of 30x per day (yes, I counted) of soft poo/diarrhea and constant pain, to one rock hard plop within 12 hrs of being switched to the Pedigree Lamb & Rice. All dogs are different though, but the more “fancy”, unnecessary ingredients and fat content a dry food contains, the worse it’s going to be for a dog with colitis. Just my 2 cents…
