It’s normal for it to take a little while to get comfortable with a new software, I also had to switch from Sibelius and it took me a bit of getting used to.
I think something like this is unlikely to change significantly, but perhaps other options might be worth considering/investigating, like the Stream Deck (which I don’t use personally, but I hear it’s relatively easy to set up a command with that that would open the popover, enter say “6” for a sixth above, and close the popover again with one button).