The only thing I can recommend is trying another brand. There are several for all life stages. I found Bailey really likes Natural Choice. She got sick over Thanksgiving weekend and I have had a terrible time finding a food she will eat that doesn't make her throw up or have loose stools. I also have her on lactobacillus to put the good cultures back in her system since she can't tolerate yogart or cottage cheese.
The pet stores should have samples for you to try. The stores here have loaded me up with several brand samples to try.
When I gave Bailey Solid Gold, she tried to roll in it
but wouldn't eat it...whatever is that about?
Good Luck