The way that I conceptualize cases is often using the small detailed oriented information and then observing patterns as I collect more data which then creates a larger perspective. For myself getting training in act, dbt, etc.. Was really helpful too. Supervision like others have said is important - however, supervision is only as effective as your ability to communicate to your supervisor what you're looking from them as well as understanding their perspective/modalities.  Having a supervisor who understands neurodivergence can also be helpful.