I would take her for a vet checkup, she’s a senior, medical concerns should be ruled out first.
A veterinarian that has examined your dog, knows her history will diagnose and prescribe treatment as indicated and will discuss with you whether medication or supplements are advised or not.
Also, I would not free feed, offer meals twice a day at the same times, pick up and store in the fridg if not consumed within 15 minutes. Always have fresh water available, I add a little water to kibble as some dogs, especially seniors don’t drink enough.
Would she prefer to eat off of a flat mat? I had a dog that would not eat out of a food dish after she accidently flipped it and bumped her nose. It only happened once…..
