come down from

phrase

1

: to move or fall downward from (somewhere or something)

I'd like you to come down from that ledge before you fall down.

2

: to be passed on from (a former time)

This is a story that has come down from ancient times.

3

informal : to stop feeling the effect of (an illegal drug) : to stop being high on (a drug)

an addict who is coming down from heroin