Structuring Mortgage

FHB here with a 10% deposit.

At which point do we start talking to the bank about structuring our mortgage? We went unconditional last week and settlement is in 2 weeks. With Easter and ANZAC holidays coming up, we haven't heard a peep from ASB about structuring our mortgage.

We do have another pre-approval from Kiwibank and the mortgage adviser is a friend of ours so she's been quite responsive on our queries and is willing to help sort the application on her end ASAP if we choose to go to her. At the time, Kiwibank didn't have the best rates so we went with ASB but our friend has done some magic to help lower the rates.

Curious to know if we have to chase ASB down for this or should we just go with Kiwibank because it seems like ASB doesn't seem to value our business?