These are some common questionaires that I use to help understand your child. But remember, a questionaire does not provide a diagnosis, it is simply another way of gathering observations
For questions about anxiety and fears, the SCARED is a very basic questionaire
#https://www.pediatricbipolar.pitt.edu/resources/instruments
Sensory issues can be an important consideration, here is one questionaire about these issues
#https://www.integra.co.uk/wp-content/uploads/2020/03/sensory-questionnaire.pd
For questions about attention, the Vanderbilt questionaires are a frequently used measure
#https://www.nichq.org/sites/default/files/resource-file/NICHQ-Vanderbilt-Assessment-Scales.pdf.