Flying with cat from Germany

Hello fellow cat lovers!
Me and my fluffy friend are flying from Germany in July to Russia via Istanbul. Currently doing all vaccines and checks. I wanted to ask you about Certificate of Veterinary Inspection which is made 48h prior to flight. Can I do it at the same vet clinic or at the government pet control one? The people in vet clinic are not completely sure as I saw and I want to clarify it to be absolutely positive about how and where to do it. Can you please share your experience?
Many thanks in advance, cat picture attached for good vibes