My poor little cat was always small but she dropped to 2.9kg and looked so scrawny. She was on tablets before the op because I remember the struggle we had to get them down her. She got so that, with or without a tablet in my hand, when I approached her she was off like a rocket LOL. But to be honest I don't remember them being changed before her op. Once I decided she was to have it, it happened within 2-3 days. I should perhaps mention mine also had failing kidneys and that is what killed her in the end. But over 20 was a good innings and she had a nice life. I do hope she's OK in the cattery this week, has she been before?