jump to it
To start doing some task or activity. Come on, jump to it—this room needs to be completely clean in an hour! I'd better jump to it—I'm on deadline.
jump to it
take prompt and energetic action. 1974 Marian Babson The Stalking Lamb When you hear my signal—jump to it!
jump ˈto it
(American English also hop ˈto it) (informal) used to tell somebody to hurry and do something quickly: You have got ten minutes to clean this room. Now jump to it.Hop to it, will you? We don’t have much time.