Boss FS-6 One Bank at a Time

On my Morningstar MC8 I have expression port 1 set to fixed switch 1 (depreciated) and I have a Boss FS-6 plugged set to momentary . It works for bank up and bank down but if I hold my foot down even for a second too much when I press it starts to scroll thru all the banks. It’s almost impossible to get it to move only one bank. Is there a way to set it that it can only move one bank at a time?

In controller settings >> general configuration, there is a bank change delay setting which sets the delay at which the bank changes