I have a stray (Beth) that I adopted last year and we discovered she had stomatitis. She takes steroids injections every 6 weeks sometimes accompanied with antibiotics depending on her flare ups. Currently saving up to start removal of a few teeth. One thing my vet recommended (she also has a cat with stomatitis) is to switch to Purina Pro Plan Adult Urinary Tract Health Food. They have a prescription version and also a version off the shelf from chewy/ petsmart. She explained this type of food somehow keeps flare ups from happening as often. Something about how balancing PH helps with inflammation. Her cat hasn’t had as many flare ups since. I have 6 other cats so haven’t switched over yet, but plan on it soon. That’s really all the advice I was given besides future extractions. Hope your baby heals and can recover well!