The phrase "to pump the brakes" means to slow down, take a moment, or exercise caution in order to prevent a potentially negative or dangerous outcome. Full definition
I'm in the mindset to totally pump the breaks on this QB fever in the draft. (sbnation.com)
Maybe you're only able to take pumping breaks at specific times each day, in which case gradually increasing the time between pumping sessions is not an option. (pumpables.co)
That means you'll have to take pumping breaks at your designated times. (lovingmomentsbras.com)