Are there alternative injection points or "methods" for a Botox lip flip? (photos)

I have used the same injector for 7 years. Today my sister tried a new injector and the injection points were different. Are there different “methods” to a lip flip? Curious to see if anyone else has heard of this and if so what are the benefits of those injection points? 1 unit on the vermilion border on the left and right side and then 1 unit in the tubercle on the left and right side of the Cupid’s bow. Like in the actual body of the lip.