Having Trouble Finding Dog Food for Senior Dog

The title is pretty self explanatory, but for more context: my dog is 14 and I got her from my mom. She has vestibular disease which is a dog form of vertigo. She stopped eating her previous kibble food, but still stuck to cans so we kept that in her diet and continue doing so now and it’s really the only thing she likes. We’ve tried a few different kibble brands to no avail and constant protesting if we run out of cans and the stores are closed. I had original theories like her teeth might bother her which is why she wouldn’t eat the hard food, but the vet said she was in perfect condition for her age. I also thought the idea of the food made her feel sick since that’s what she threw up when she had the episode. I’m hoping to see if anyone had any recommendations on brands that may be better and cost efficient or if there’s any food alternatives that I can put in rotation. She is very picky and doesn’t like lamb or beef, but loves chicken so I’ve been starting with that. Thank you!!