well after a quick search I found a few similar threads on the subject but not one answer - because there isn’t “one size fits all”.
I still believe you will need to reduce tyre pressures, by how much I guess its different for each individual, track temperature, the size of the wheels (16 or 17 rim means there will be two different tyre aspect ratios) and how hard one will push the car around the track. I guess I will get the pressure gauge and measure the tyre pressures 10 laps in the first session and take it from there.