7 Year old son newly diagnosed with Aspergers

Hi although it has been suspected for a while we received a formal diagnosis this week for the little guy. He has a 14 yr old sister and as at the moment my husband and I are just taking sometime to process this before we move forward. We are not surprised by the diagnosis but needed to formalise it as he is experiencing anxiety and stress a lot more at school this year. (Year 2)

If you were to give a piece of advice to a parent of a newly diagnosed child based on your experience what would it be?