Change in Differential pressure limit range

Differential pressure range to be kept from 6 to 22 Pascal instead of 16-30 Pascal in same grade area which is currently maintained.
So through change control apart from risk assessment which impacted on current environmental SOP, should we plan for the DP monitoring through a separate protocol or existing HVAC re validation protocol to be follow for the monitoring???

Or any other suggestion for the implementation of the change, pls share…