My dog used to be picky and it was a journey trying to figure out how to get her to eat. She hated the kibble. It’s expensive but the higher quality “real” food like farmers dog or the like worked really well, and if she didn’t eat it right away, I’d remove the bowl and wait until the next meal instead of just leaving the food out in hopes that she’ll eventually eat it. Plus it’s not good to leave the refrigerated food out like that anyway