Photographing kids with special needs, especially autism spectrum disorder, is very challenging when it come to how to light. These kids are very sensitive to light. Once a flash goes off, that's it! They don't want to open their eyes or they squint, which everyone knows, doesn't make for great photos. Using available light in their comfort zone is the best option. This creates other challenges, but sometimes I just say, any photo is better than no photos. You don't want to go through life wishing you had tried to get more photographs when your kids were younger.