Try to remember that SS aren't a court or judge.
They can make suggestions but can't order anything.
Also if they don't make a house visit or see you with your son they haven't made a fair and just assessment.
This means if they do write a report try not to get too stressed by it because it would be based on allegations and not facts.
My partner has had dreadful phone SS assessments which cafcass have contradicted further down the road.
Not suggesting your situation will go down the cafcass route though. Just for an example of SS not