One thing that has worked for me is posting on Slack about unavailability. I just post something like: "Turning off Slack to work on X with no distractions". I'

One thing that has worked for me is posting on Slack about unavailability. I just post something like: "Turning off Slack to work on X with no distractions". I'm usually super-active on Slack and posting something like that lets my team know, which I think is important given the context. I use it sparingly to good results.