follow (one's) lead
To act in a manner similar to someone else. I know you're nervous about having to lie to Mom, but just follow my lead and don't start rambling. I am following my sister's lead and joining her old sorority.
follow someone's lead
to do as someone else does; to accept someone's guidance; to follow someone's direction. Just follow my lead and you will not get lost. John followed his father's lead and became a lawyer.