OK yes the coldcard has recognised the transaction at less than 20 inputs, but it would require 6-8 transactions for me to send the total to where I want to. So am I able to open the psbt and delete certain things to reduce the input?
Is there a problem with consolidating the inputs first? Using a few transactions with less than 20 inputs to send back to your own address, and sending the consolidated inputs to your destination.
Deleting the inputs would result in your having less inputs for your transaction, and you need to include them all or else your total amount would be less than you desire.