Wait a moment or be patient (often because you are moving too quickly or thoughtlessly). Whoa, hold your horses, kids. We're going to sing before we start eating cake.I know you're excited to see the prototype, but you all just need to hold your horses while we get set up.
hold one’s horses
tv. to wait up; to relax and slow down; to be patient. (Usually a command.) Now, just hold your horses and let me explain.