Hello Zee,
I am sorry your kitten wasn’t feeling well. I am not an expert on food so sorry I can’t help there. Has your vet run all the basic diagnostics already: ran a fecal and blood sample to rule out a medical problem before changing the diet? Maybe the root of the problem is not the food. You could ask your vet about seeing a specialist too. I hope your kitten feels better soon!
Diedra
thank you very much