What's the fastest way to switch between default app Touch Bar and BTT?

Sorry for the newbie question.
I just started trying out BTT and have configured a preset.

For some apps, like Mail, I prefer using the default Touch Bar. However, I don't always need it so it's ok if my BTT Touch Bar stays.

For now, I've been using a shortcut that toggles BTT Touch Bar, but this solution is kind of slow. It usually takes some seconds to show, and sometimes it doesn't even show until I switch apps or open BTT manually.

Is there a quick way to toggle BTT Touch Bar on and off?

Thank you!

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