Kira & Max said:
Do you have a recommendation?
The link to "Home Cooked" in my signature is my "solution." I mix it 50-50 by weight with the Wellness. This may not be low enough though for you. However this is not the end of the story if prepping your own food is something that might interest you.
That recipe uses chicken breast. If one uses chicken thigh AND breast one can get the P level down even more since chicken thigh is lower in P than breast. And good news with the chicken thigh it brings up the fat content to something more average than low. I have been working on a recipe that might suit your needs, just depending on how low you want to take the P and if you think you can have rice bran [grain] or not.
Anyway, if the home prepped raw OR cooked interests you then I can help guide you more and would be happy to answer more questions. The
http://www.knowwhatyoufeed.com site is great, the owner is very helpful [she has one of the first cats to go OTJ from Levimir on this board] and I have custom nutrient calculators she has provided me with additional ingredients and functions that I can share with you.