What is the average number treatments to remove a black tattoo on the foot with Enlighten?

I never thought i’d Get a tattoo.The tattoo artist talked me into getting it on top of my foot where I wanted it on the inside. It’s also way bigger than what I wanted. I just had my second enlighten treatment on my foot. The technician who is doing my treatment stated she had hoped to see more movement with the first treatment. I’m feeling discouraged. I know tattoo removal depends on the person and the tattoo, but I’m Curious how many on average it takes with enlighten on an extremity??