Okay, I'm terrible at this.
The closest dose would be 1/2 teaspoon but not slightly more...it looks like if anything slightly less but that's what I've always been told to give. That dose certainly won't hurt.
I think there must be different dosing methods used (not necessarily all right) because 7 ml would be over 1 teaspoon which is way too much. Is that the dose your vet said to give?