First, communication before shooting is very important. The style and purpose that the family portrait wants to present need to be communicated with the customer in advance.
Second, in order to take a clear picture of each family member's face and avoid shooting with a large aperture, try shooting in the range of F8.0- 13.
Third, don't force the subject to take off his glasses. It is best for photographers to solve the problem of reflection by themselves, such as using polarizers to assist photography, or changing the angle of shooting position.
Fourth, shoot in the way of continuous shooting. After shooting several more shots at a time, choose the one with the best state of all people, so as not to always catch someone closing their eyes.