I want the rotation keystroke on my wacom tablet pen to work as hold not toggle. How can I do that?

When I hold "R" keystroke on my pen It gives me the rotation tool (which is what I want). But when I let go of it the rotation tool stays, whitch makes me click on "B" for brush everytime I use the rotation tool How can I change it to hold instead of toggle, jsut like the pan/scroll keystroke option I have? I feel like I waste a lot of time clicking "B" after every rotation and I rotate my canvas a lot, almost on every line.