Advice on ND Yag for light freckles on fair skin, what treatment is best? (photos)

Hi, I'm doing ND yag for freckles. I live in Asia and the dermatologist is only experienced in Asian skin type. Therefore ideal settings for my skin type seem to be a bit of a guessing game for her. The settings are too weak and then in the last session caused some bleeding/light scarring. Taking into account my skin type, what would a dermatologist experienced in this kind of treatment on my skin type, recommend as far as settings for the nd yag in the 532nm and 1064nm wavelengths. Thanks.