[PennysMum]

I honestly don't know much about home cooking, so I can't help you there... but could you at least ask the vet if she could get you some Royal Canin brand food rather than the Hill's brand? Science diet is just junk-- Royal Canin is head and shoulders above them, even if they might not stand up well against some of the non-prescription foods out there.

I have a cat who is on Ammonil tablets twice daily in order to control struvite crystal formation. Because he has so many severe food allergies, none of the veterinary diets out there are options for us, so I have been feeding him a low-magnesium canned food and giving Ammonil as a urine acidifier twice daily. We just had a recheck on Monday and his urine ph is down to 6 with no crystals seen, so it seems like we're on the right track. I don't know if managing the problem like that might be an option your vet would consider, but you may want to bring it up with her.