Hi Akinbola,
If you think its temperory increase in sdcch congestion, Then you can increase the sd cofig from combined to non combined or with additional sd timeslots. And check whether the sd traffic is geniune.
Or else, check whether what is the maximum cause of this rise in sd traffic. Probably its a new location area boundary.
Best way to overcome this spurious sd congestion is using dynamic sd reconfigration.
Best regards,
Garry !!