To mute or unmute someone, log into the Instagram app for Android or iPhone or the Instagram Lite app for Android and follow the instructions below.
If you don't want to see someone's posts in your feed, you can mute them:

Mute or unmute someone through messages
Tap

or

in the top right of Feed.
- Tap the chat with the person you want to mute/unmute.
- Tap the person's name at the top of your chat.
- Tap
or
next Mute messages or Mute call notifications to mute/unmute someone.

Mute or unmute an account through their profile
- Tap their username from their Feed or story post, or tap
and search their username to go to their profile. - Tap Following below their profile info.
- Tap Mute.
- Tap
next to Posts or Stories.
To unmute them, tap

next to
Posts or
Stories.